US20150331537A1 - Touch-panel display device - Google Patents
Touch-panel display device Download PDFInfo
- Publication number
- US20150331537A1 US20150331537A1 US14/714,197 US201514714197A US2015331537A1 US 20150331537 A1 US20150331537 A1 US 20150331537A1 US 201514714197 A US201514714197 A US 201514714197A US 2015331537 A1 US2015331537 A1 US 2015331537A1
- Authority
- US
- United States
- Prior art keywords
- touch
- display device
- substrate
- panel display
- viewable area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/206—Organic displays, e.g. OLED
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/208—Touch screens
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- the present invention relates to touch-sensitive technology and, more particularly, to a touch-panel display device.
- Touch panels or touch screens have become more and more popular in electronic devices including, in particular, portable or hand-held devices such as personal digital assistants (PDAs) and mobile phones.
- PDAs personal digital assistants
- mobile phones mobile phones
- the transparent conductive substrate of the touch panel generally includes an optically transmissive substrate and a transparent patterned conductive layer.
- a transparent conductive layer of, for example, indium tin oxide (ITO) is coated on a non-conductive, optically transmissive substrate.
- a sensing electrode layer is formed by a photolithography process followed by an etching process.
- the sensing electrode layer includes an ITO region (i.e., the electrode region) and an etched region. Since a conductive film is absent from the etched region, light directly impinges the transparent substrate. However, the refractive index of the ITO region is different from that of the etched region. As a result, a line of etch at an interface between the ITO region and the etched region can be clearly observed by a viewer, which may seriously affect the appearance of the touch panel.
- IM index match
- the present disclosure provides a touch-panel display device to overcome or alleviate the above-mentioned issues.
- the touch-panel display device comprises a substrate, a display module, a sensing module and a function layer.
- the substrate includes a first surface and a second surface on opposite sides of the substrate, respectively.
- the display module is proximal to the first surface of the substrate, and the sensing module is disposed between the display module and the substrate.
- the function layer disposed on either the first surface or the second surface of the substrate, is configured to polarize light emitted from the display module towards the substrate.
- the display module includes a liquid crystal module comprising a first polarizer and a liquid crystal layer, and the function layer serves as a second polarizer for the liquid crystal module.
- the first polarizer is configured to polarize light incident upon the liquid crystal layer
- the function layer is configured to polarize light emergent from the liquid crystal layer.
- the polarization direction of the first polarizer is orthogonal to that of the function layer.
- the display module includes an organic light emitting diode (OLED) module comprising an organic light emitting layer.
- OLED organic light emitting diode
- the function layer serves as a polarizer for the OLED module and is configured to polarize light emergent from the organic light emitting layer.
- the polarizer includes a circular polarizer.
- the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer only covers the viewable area.
- the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and extends into the non-viewable area.
- the function layer extends a length of 0.1 millimeter (mm) to 0.2 mm from the viewable area into the non-viewable area of the substrate.
- the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and the non-viewable area of the substrate.
- the touch-panel display device further comprises a coating.
- the coating includes one of an anti-split (AS) film, anti-glare (AG) film, anti-reflection (AR) film and anti-fingerprint (AF) film.
- the function layer includes an etched surface for diffuse reflection of light incident thereupon.
- the function layer includes a nano-coating for diffuse reflection of light incident thereupon.
- the sensing module includes a sensing electrode layer on the first surface of the substrate.
- the touch-panel display device further comprises a first carrier between the substrate and the display module.
- the sensing module includes a sensing electrode layer on the first carrier.
- the touch-panel display device further comprises a first carrier between the substrate and the display module, and a second carrier between the first carrier and the display module.
- the sensing module includes a first sensing electrode layer on the first carrier, and a second sensing electrode layer on the second carrier.
- At least one of the sensing electrode layer, the first sensing electrode layer or the second sensing electrode layer includes a material selected from one of metal oxides, nanometals, carbon nanotubes and graphene.
- At least one of the substrate, the first carrier or the second carrier includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
- PMMA polymethyl methacrylate
- PVC polyvinyl chloride
- PP polypropylene
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PC polycarbonate
- PS polystyrene
- the function layer may cover only the viewable area of the substrate. Effectively, color difference in the viewable area due to a line of etch between an etched region and a non-etched region (such as an ITO region) is alleviated or overcome. The problem of color difference obviously would adversely affect the visual effect of a touch-panel display device.
- the function layer not only covers the viewable area, but also may extend into the non-viewable area to allow light emitting from a backlight source of the display module to enter the function layer. Effectively, leakage of light is alleviated or overcome.
- the function layer may fully cover the viewable area and the non-viewable area of the substrate so as to reduce the color difference between reflected light from a masking layer and that from the viewable area.
- the viewable area and the non-viewable area appear to have a consistent color. Effectively, the problem of color difference is alleviated or overcome.
- the function layer serves as a polarizer for the display module according to the present invention.
- the inventive touch-panel display device eliminates the need of a polarizer that would otherwise be indispensable in the existing structures.
- FIG. 1A is a schematic cross-sectional view of a touch-panel display device, in accordance with an embodiment of the present invention.
- FIG. 1B is a schematic view of a display module, in accordance with an embodiment of the present invention.
- FIG. 1C is a schematic view of a display module, in accordance with another embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view of a touch-panel display device, in accordance with another embodiment of the present invention.
- FIG. 3A is a schematic view of a function layer of a touch-panel display device, in accordance with an embodiment of the present invention.
- FIG. 3B is a schematic view of a function layer of a touch-panel display device, in accordance with an embodiment of the present invention.
- FIG. 4 is a schematic cross-sectional view of a touch-panel display device, in accordance with yet another embodiment of the present invention.
- FIG. 5A is a schematic cross-sectional view of a touch-panel display device, in accordance with still another embodiment of the present invention.
- FIG. 5B is a schematic cross-sectional view of a touch-panel display device, in accordance with yet still another embodiment of the present invention.
- FIG. 5C is a schematic cross-sectional view of a touch-panel display device, in accordance with a further embodiment of the present invention.
- FIG. 6A is a schematic cross-sectional view of a touch-panel display device, in accordance with an embodiment of the present invention.
- FIG. 6B is a schematic cross-sectional view of a touch-panel display device, in accordance with another embodiment of the present invention.
- FIG. 6C is a schematic cross-sectional view of a touch-panel display device, in accordance with yet another embodiment of the present invention.
- FIG. 6D is a schematic cross-sectional view of a touch-panel display device, in accordance with still another embodiment of the present invention.
- FIG. 6E is a schematic cross-sectional view of a touch-panel display device, in accordance with yet still another embodiment of the present invention.
- FIG. 1A is a schematic cross-sectional view of a touch-panel display device 10 , in accordance with an embodiment of the present invention.
- the touch-panel display device 10 includes a display module 12 , a sensing module 13 , an adhesive layer 14 , a substrate 16 and a function layer 18 .
- the substrate 16 has a first surface 161 and a second surface 162 , which are disposed on opposite sides of the substrate 16 .
- the substrate 16 can be divided into a viewable area (not shown) and a non-viewable area (not shown) disposed at one or more sides of the viewable area.
- sensing electrodes (not shown) of the sensing module 13 are mainly located in the viewable area, while wiring lines and a masking layer (both not shown) are located in the non-viewable area.
- the substrate 16 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
- PMMA polymethyl methacrylate
- PVC polyvinyl chloride
- PP polypropylene
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PC polycarbonate
- PS polystyrene
- the display module 12 is located proximal to the first surface 161 of the substrate 16 .
- the display module 12 includes a backlit display such as a liquid crystal display (LCD).
- the display module 12 includes a self-emissive display such as an organic light emitting diode (OLED) display.
- OLED organic light emitting diode
- the display module 12 is substantially similar in structure to existing LEDs and OLED displays except that, for example, a polarizer that would otherwise exist in the existing LEDs and OLED displays is eliminated. Instead, a function layer serves as the polarizer.
- the structure of the display module 12 will be further discussed with reference to FIGS. 1B and 1C .
- the adhesive layer 14 functions to bond together the substrate 16 and the display module 12 .
- the adhesive layer 14 includes optical clear resin (OCR) or optical clear adhesive (OCA).
- OCR optical clear resin
- OCA optical clear adhesive
- the adhesive layer 14 may include glue or optically transmissive, double-sided adhesive tape.
- the function layer 18 is located proximal to the second surface 162 of the substrate 16 , and is configured to provide the function of a polarizer. In some embodiments, however, the function layer 18 is disposed on the first surface 161 of the substrate 16 . In an embodiment, the function layer 18 includes a polarizer configured to polarize light emitting from the display module 12 towards the substrate 16 . Suitable materials for the function layer 18 include highly optically transmissive polymer films such PVA, impregnated with a dichroic material such as iodine or dye. In an embodiment, the masking layer in the substrate 16 includes a material selected from black photo resist, black resin or black ink.
- the function layer 18 may extend into the non-viewable area so as to alleviate the problem of light leakage.
- the function layer 18 may fully cover the non-viewable area to reduce color difference between reflected light from the masking layer and that from the viewable area.
- the viewable area appears black, and is consistent in color with the non-viewable area, resulting in a real black appearance.
- the sensing electrodes in the viewable area of the substrate 16 are concealed from view.
- the function layer 18 diminishes reflected light from the sensing electrodes in the viewable area of the substrate 16 , which facilitates to conceal the sensing electrodes from view.
- FIG. 1B is a schematic view of the display module 12 , in accordance with an embodiment of the present invention.
- the display module 12 includes a liquid crystal (LC) module, which further includes a backlight unit 120 , a first polarizer 121 , a lower substrate 123 , an LC layer 125 and an upper substrate 127 .
- the LC module according to the present invention replaces a polarizer (shown in a dotted block) with the function layer 18 .
- the function layer 18 serves as a second polarizer for the LC module.
- the first polarizer 121 is configured to polarize light incident upon the LC layer 125
- the second polarizer i.e., the function layer 18
- the first polarizer 121 contributes to polarization in a first direction
- the second polarizer 18 contributes to polarization in a second direction and is configured to work in conjunction with the first polarizer 121 to polarize light emitting from the LC module towards the substrate 16 .
- the first direction of polarization and the second direction of polarization are substantially orthogonal to each other.
- FIG. 1C is a schematic view of the display module 12 , in accordance with another embodiment of the present invention.
- the display module 12 includes an OLED module, which further includes a lower substrate 122 , an organic light emitting layer 124 and an upper substrate 126 .
- certain OLEDs employ metal anodes having relatively high reflectivity. Such OLEDs, when used under intense light in the outdoors, the ambient light may pass through the upper substrate and reflect from the metal anode, resulting in a deteriorated contrast. To enhance the contrast, generally a polarizer would be attached to the upper substrate.
- a polarized light beam created due to an incident light beam passing the polarizer enters a 1 ⁇ 4 lambda compensation film, resulting in a circular polarized light beam having a positive phase shift of 45 degrees.
- the circular polarized light beam is then reflected by the metal anode, which causes a 180-degree phase shift. Consequently, the reflected circular polarized beam has a phase shift of 135 degrees with respect to the polarized light beam.
- Another polarized light beam is created after the reflected circular light beam passes the 1 ⁇ 4 lambda compensation film in a reverse direction, resulting in a 90-degree phase shift. This polarized light beam now travels in a direction in parallel with the absorbing axis of the polarizer, and thus cannot pass the polarizer.
- the OLED module according to the present invention replaces a polarizer (shown in a dotted block) with the function layer 18 .
- the function layer 18 serves as a polarizer for the OLED module, and is configured to polarize light emergent from the organic emitting layer 124 and block light, after incident upon the first surface 161 of the substrate 16 , reflected by the OLED module 12 .
- the function layer 18 serves as a circular polarizer for the OLED module.
- FIG. 2 is a schematic cross-sectional view of a touch-panel display device 20 , in accordance with another embodiment of the present invention.
- the touch-panel display device 20 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference to FIG. 1A except that, for example, the touch-panel display device 20 further includes a coating 25 on the function layer 18 .
- the coating 25 includes one of an anti-split (AS) film, anti-glare (AG) film, anti-reflection (AR) film and anti-fingerprint (AF) film.
- AS anti-split
- AG anti-glare
- AR anti-reflection
- AF anti-fingerprint
- the coating 25 functions as an AS film
- suitable materials for the coating 25 include polymethyl methacrylate (PMMA), triacetyl cellulose (TAC), polyethylene terephthalate (PET), polypropylene (PP), cyclo olefin polymer or a combination thereof.
- the AS film has a thickness ranging between approximately 20 micrometers (um) and 1000 um. If the thickness is smaller than approximately 20 um, manufacturing complexity and cost may increase. Moreover, if the thickness is greater than approximately 1000 um, the AS film may hinder light from transmission and thus may adversely affect visibility.
- suitable materials for the coating 25 include silicon dioxide.
- the haze of the AG film ranges between approximately 1% and 2%, which facilitates light scattering and prevents Newton's rings.
- suitable materials for the coating 25 include polymer, metal oxide and nano-sol.
- suitable materials for the coating 25 include chromium (Cr), or fluoride such as Teflon and calcium fluoride (CaF 2 ).
- FIG. 3A is a schematic view of a function layer 181 of a touch-panel display device 31 , in accordance with an embodiment of the present invention.
- the touch-panel display device 31 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference to FIG. 1A except that, for example, the function layer 181 of the touch-panel display device 31 provides anti-glare function in addition to the polarization function.
- the function layer 181 includes a roughened surface for diffuse reflection of incident light. In an embodiment according to the present invention, the roughened surface is formed by etching, for example, the surface of the function layer 181 , resulting in a lump-and-pit structure across the surface. The lump-and-pit structure facilitates divergence of incident light.
- FIG. 3B is a schematic view of a function layer 182 of a touch-panel display device 32 , in accordance with an embodiment of the present invention.
- the touch-panel display device 32 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference to FIG. 1A except that, for example, the function layer 182 of the touch-panel display device 32 provides anti-glare function in addition to the polarization function.
- the function layer 182 includes a hazed surface for diffuse reflection of incident light.
- the hazed surface is formed by nano-coating, for example, the function layer 182 , resulting in a fine-particle structure across the surface. The fine-particle structure facilitates divergence of incident light.
- FIG. 4 is a schematic cross-sectional view of a touch-panel display device 40 , in accordance with yet another embodiment of the present invention.
- the display module 12 of the touch-panel display device 40 includes an LC module comprising a first polarizer 121 .
- the touch-panel display device 40 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference to FIG. 1A except, for example, a function layer 48 of the touch-panel display device 40 .
- the function layer 48 is configured to serve as a second polarizer for the touch-panel display device 40 , and has a size larger than the first polarizer 121 .
- the second polarizer can be designed with a larger size than the first polarizer 121 . Effectively, the leakage of light can be alleviated or overcome. The problem of light leakage will be further discussed with reference to FIG. 5B .
- the display module 12 of the touch-panel display device 40 includes an OLED module.
- the function layer 48 that serves as a second polarizer has a size not smaller than the OLED module. Effectively, the problem of light leakage can be alleviated or overcome.
- FIG. 5A is a schematic cross-sectional view of a touch-panel display device 50 , in accordance with still another embodiment of the present invention.
- the substrate 16 of the touch-panel display device 50 is divided into a viewable area VW and at least one non-viewable area NVW beside the viewable area VW.
- Sensing electrodes (not shown) of the touch-panel display device 50 are mainly disposed in the viewable area VW, while wiring lines and a masking layer 15 are disposed in the at least one non-viewable area NVW.
- a function layer 581 of the touch-panel display device 50 covers only the viewable area VW of the substrate 16 .
- FIG. 5B is a schematic cross-sectional view of the touch-panel display device 50 , in accordance with yet still another embodiment of the present invention.
- a function layer 582 of the touch-panel display device 50 not only covers the viewable area VW of the substrate 16 but also extends into the at least one non-viewable area NVW.
- the function layer 582 extends a length d of approximately 0.1 millimeter (mm) to 0.2 mm from the viewable area VW into the at least one non-viewable area NVW.
- the extended portion of the function layer 582 allows the light emitting from the backlight unit 120 to pass, after times of refraction, the substrate 16 (having an index of refraction of approximately 1.5, substantially equal to that of the adhesive layer 14 ) and reach the function layer 582 , as shown by arrows. Effectively, the problem of light leakage is alleviated.
- FIG. 5C is a schematic cross-sectional view of the touch-panel display device 50 , in accordance with a further embodiment of the present invention.
- a function layer 583 of the touch-panel display device 50 fully covers the viewable area VW and the at least one non-viewable area NVW of the substrate 16 .
- the function layer 583 reduces the color difference between reflected light from the masking layer 15 and that from the viewable area VW so that the viewable area VW and the at least one non-viewable area NVW appear to have a consistent color. Effectively, the problem of color difference is alleviated.
- FIG. 6A is a schematic cross-sectional view of a touch-panel display device 60 , in accordance with an embodiment of the present invention.
- the touch-panel display device 60 includes a sensing electrode layer 17 on the first surface 161 of the substrate 16 .
- the sensing electrode layer 17 is attached to the display module 12 by the adhesive layer 14 .
- the sensing electrode layer 17 is formed in a first pattern in which electrodes are arranged in rows (or columns) and are spaced at regular intervals one row (or column) from another.
- the sensing electrode layer 17 is formed in a second pattern in which a set of electrodes arranged in rows is staggered with another set of electrodes arranged in columns.
- suitable materials for the sensing electrode layer 17 include, but are not limited to, metal oxides, nanometals, carbon nanotubes and graphene.
- FIG. 6B is a schematic cross-sectional view of the touch-panel display device 60 , in accordance with another embodiment of the present invention.
- the touch-panel display device 60 includes a first carrier 661 between the substrate 16 and the display module 12 .
- the sensing electrode layer 17 disposed on a surface of the first carrier 661 , is attached to the substrate 16 by a first adhesive layer 141 .
- the opposite surface of the first carrier 661 is attached to the display module by a second adhesive layer 142 .
- the first carrier 661 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
- PMMA polymethyl methacrylate
- PVC polyvinyl chloride
- PP polypropylene
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PC polycarbonate
- PS polystyrene
- the sensing electrode layer 17 is arranged in the above-mentioned first electrode pattern or the second electrode pattern.
- the first adhesive layer 141 and the second adhesive layer 142 include optical clear resin or optical clear adhesive.
- FIG. 6C is a schematic cross-sectional view of the touch-panel display device 60 , in accordance with yet another embodiment of the present invention.
- a first sensing electrode layer 171 disposed on a surface of the first carrier 661 , is attached to the substrate 16 by the first adhesive layer 141 .
- a second sensing electrode layer 172 disposed on the opposite surface of the first carrier 661 , is attached to the display module 12 by the second adhesive layer 142 .
- the first sensing electrode layer 171 includes first electrodes arranged in a first direction
- the second sensing electrode layer 172 includes second electrodes arranged in a second direction, which is substantially orthogonal to the first direction.
- suitable materials for the first sensing electrode layer 171 and the second sensing electrode layer 172 include, but are not limited to, metal oxides, nanometals, carbon nanotubes and graphene.
- FIG. 6D is a schematic cross-sectional view of the touch-panel display device 60 , in accordance with still another embodiment of the present invention.
- the first sensing electrode layer 171 is disposed on a surface of the substrate 16
- the second sensing electrode layer 172 is disposed on a surface of the first carrier 661 .
- the first sensing electrode layer 171 and the second sensing electrode layer 172 are attached to each other by the first adhesive layer 141 .
- the opposite surface of the first carrier 661 is attached to the display module 12 by the second adhesive layer 142 .
- FIG. 6E is a schematic cross-sectional view of the touch-panel display device 60 , in accordance with yet still another embodiment of the present invention.
- the touch-panel display device 60 includes, in addition to the first carrier 661 between the substrate 16 and the display module 12 , a second carrier 662 between the first carrier 661 and the display module 12 .
- the first sensing electrode layer 171 is disposed on a surface of the first carrier 661
- the second sensing electrode layer 172 is disposed on a surface of the second carrier 662 .
- the opposite surface of the first carrier 661 is attached to the substrate 16 by the first adhesive layer 141 .
- the first sensing electrode layer 171 and the second sensing electrode layer 172 are attached to each other by the second adhesive layer 142 . Furthermore, the opposite surface of the second carrier 662 is attached to the display module 12 by a third adhesive layer 143 .
- the second carrier 662 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
- the third adhesive layer 143 includes optical clear resin or optical clear adhesive.
- SITO single-sided indium tin oxide
- DITO double-sided indium tin oxide
- the SITO structure includes a diamond-like electrode pattern, in which x-axis electrodes and y-axis electrodes are formed on a same side of a glass substrate.
- x-axis electrodes and y-axis electrodes are formed on opposite sides of a glass substrate.
Abstract
The present disclosure provides a touch-panel display device. The touch-panel display device comprises a substrate, a display module, a sensing module and a function layer. The substrate includes a first surface and a second surface on opposite sides of the substrate, respectively. The display module is proximal to the first surface of the substrate, and the sensing module is disposed between the display module and the substrate. The function layer, disposed on either the first surface or the second surface of the substrate, is configured to polarize light emitted from the display module towards the substrate.
Description
- This application claims priority of the People's Republic of China Patent Application No. CN201410205301.8, filed on May 15, 2014, the entirety of which is incorporated by reference herein
- 1. Field of the Invention
- The present invention relates to touch-sensitive technology and, more particularly, to a touch-panel display device.
- 2. Description of the Related Art
- Touch panels or touch screens have become more and more popular in electronic devices including, in particular, portable or hand-held devices such as personal digital assistants (PDAs) and mobile phones.
- In a touch-panel display device, the transparent conductive substrate of the touch panel generally includes an optically transmissive substrate and a transparent patterned conductive layer. In general, to form the transparent conductive substrate, a transparent conductive layer of, for example, indium tin oxide (ITO) is coated on a non-conductive, optically transmissive substrate. Subsequently, a sensing electrode layer is formed by a photolithography process followed by an etching process. The sensing electrode layer includes an ITO region (i.e., the electrode region) and an etched region. Since a conductive film is absent from the etched region, light directly impinges the transparent substrate. However, the refractive index of the ITO region is different from that of the etched region. As a result, a line of etch at an interface between the ITO region and the etched region can be clearly observed by a viewer, which may seriously affect the appearance of the touch panel.
- To address the issue, an index match (IM) layer is adopted. The IM layer, however, is relatively thick and suffers a laborious process, which inevitably increase the manufacturing cost. Moreover, such IM layers are disadvantageous to the downscaling of touch panels.
- It may therefore be desirable to reduce the visibility of the line of etch in the sensing electrode layer so as to enhance the visual effect of a touch panel, and also to save the manufacturing cost and facilitate downscaling of a touch-panel display device.
- The present disclosure provides a touch-panel display device to overcome or alleviate the above-mentioned issues. The touch-panel display device comprises a substrate, a display module, a sensing module and a function layer. The substrate includes a first surface and a second surface on opposite sides of the substrate, respectively. The display module is proximal to the first surface of the substrate, and the sensing module is disposed between the display module and the substrate. The function layer, disposed on either the first surface or the second surface of the substrate, is configured to polarize light emitted from the display module towards the substrate.
- In an embodiment, the display module includes a liquid crystal module comprising a first polarizer and a liquid crystal layer, and the function layer serves as a second polarizer for the liquid crystal module. The first polarizer is configured to polarize light incident upon the liquid crystal layer, and the function layer is configured to polarize light emergent from the liquid crystal layer. The polarization direction of the first polarizer is orthogonal to that of the function layer.
- In another embodiment, the display module includes an organic light emitting diode (OLED) module comprising an organic light emitting layer. The function layer serves as a polarizer for the OLED module and is configured to polarize light emergent from the organic light emitting layer.
- In still another embodiment, the polarizer includes a circular polarizer.
- In yet another embodiment, the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer only covers the viewable area.
- In yet still another embodiment, the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and extends into the non-viewable area.
- In an embodiment, the function layer extends a length of 0.1 millimeter (mm) to 0.2 mm from the viewable area into the non-viewable area of the substrate.
- In another embodiment, the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and the non-viewable area of the substrate.
- In still another embodiment, the touch-panel display device further comprises a coating. The coating includes one of an anti-split (AS) film, anti-glare (AG) film, anti-reflection (AR) film and anti-fingerprint (AF) film.
- In yet another embodiment, the function layer includes an etched surface for diffuse reflection of light incident thereupon.
- In yet still another embodiment, the function layer includes a nano-coating for diffuse reflection of light incident thereupon.
- In an embodiment, the sensing module includes a sensing electrode layer on the first surface of the substrate.
- In another embodiment, the touch-panel display device further comprises a first carrier between the substrate and the display module. Moreover, the sensing module includes a sensing electrode layer on the first carrier.
- In still another embodiment, the touch-panel display device further comprises a first carrier between the substrate and the display module, and a second carrier between the first carrier and the display module. Moreover, the sensing module includes a first sensing electrode layer on the first carrier, and a second sensing electrode layer on the second carrier.
- In yet another embodiment, at least one of the sensing electrode layer, the first sensing electrode layer or the second sensing electrode layer includes a material selected from one of metal oxides, nanometals, carbon nanotubes and graphene.
- In yet still another embodiment, at least one of the substrate, the first carrier or the second carrier includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
- In the above-mentioned embodiments, the function layer may cover only the viewable area of the substrate. Effectively, color difference in the viewable area due to a line of etch between an etched region and a non-etched region (such as an ITO region) is alleviated or overcome. The problem of color difference obviously would adversely affect the visual effect of a touch-panel display device.
- Moreover, the function layer not only covers the viewable area, but also may extend into the non-viewable area to allow light emitting from a backlight source of the display module to enter the function layer. Effectively, leakage of light is alleviated or overcome.
- Furthermore, the function layer may fully cover the viewable area and the non-viewable area of the substrate so as to reduce the color difference between reflected light from a masking layer and that from the viewable area. As a result, the viewable area and the non-viewable area appear to have a consistent color. Effectively, the problem of color difference is alleviated or overcome.
- Further, the function layer serves as a polarizer for the display module according to the present invention. As compared to some existing LCDs or OLEDs, the inventive touch-panel display device eliminates the need of a polarizer that would otherwise be indispensable in the existing structures.
- The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of the invention will be described hereinafter, and form the subject of the claims of the invention. It should be appreciated by persons having ordinary skill in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures or processes for carrying out the same purposes of the present invention. It should also be realized by persons having ordinary skill in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims.
- Embodiments, or examples, of the disclosure illustrated in the drawings are now described using specific languages. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended. Any alterations and modifications in the described embodiments, and any further applications of principles described in this document are contemplated as would normally occur to persons having ordinary skill in the art to which the disclosure relates. Reference numerals may be repeated throughout the embodiments, but this does not necessarily require that feature(s) of one embodiment apply to another embodiment, even if they share the same reference number.
- It will be understood that when an element is referred to as being “connected to” or “coupled to” another element, it may be directly connected to or coupled to the other element, or intervening elements may be present.
- The objectives and advantages of the present invention are illustrated with the following description and upon reference to the accompanying drawings, in which:
-
FIG. 1A is a schematic cross-sectional view of a touch-panel display device, in accordance with an embodiment of the present invention. -
FIG. 1B is a schematic view of a display module, in accordance with an embodiment of the present invention. -
FIG. 1C is a schematic view of a display module, in accordance with another embodiment of the present invention. -
FIG. 2 is a schematic cross-sectional view of a touch-panel display device, in accordance with another embodiment of the present invention. -
FIG. 3A is a schematic view of a function layer of a touch-panel display device, in accordance with an embodiment of the present invention. -
FIG. 3B is a schematic view of a function layer of a touch-panel display device, in accordance with an embodiment of the present invention. -
FIG. 4 is a schematic cross-sectional view of a touch-panel display device, in accordance with yet another embodiment of the present invention. -
FIG. 5A is a schematic cross-sectional view of a touch-panel display device, in accordance with still another embodiment of the present invention. -
FIG. 5B is a schematic cross-sectional view of a touch-panel display device, in accordance with yet still another embodiment of the present invention. -
FIG. 5C is a schematic cross-sectional view of a touch-panel display device, in accordance with a further embodiment of the present invention. -
FIG. 6A is a schematic cross-sectional view of a touch-panel display device, in accordance with an embodiment of the present invention. -
FIG. 6B is a schematic cross-sectional view of a touch-panel display device, in accordance with another embodiment of the present invention. -
FIG. 6C is a schematic cross-sectional view of a touch-panel display device, in accordance with yet another embodiment of the present invention. -
FIG. 6D is a schematic cross-sectional view of a touch-panel display device, in accordance with still another embodiment of the present invention. -
FIG. 6E is a schematic cross-sectional view of a touch-panel display device, in accordance with yet still another embodiment of the present invention. - The embodiments of the present invention are shown in the following description with the drawings, wherein similar or same components are indicated by similar reference numbers.
-
FIG. 1A is a schematic cross-sectional view of a touch-panel display device 10, in accordance with an embodiment of the present invention. Referring toFIG. 1A , the touch-panel display device 10 includes adisplay module 12, asensing module 13, anadhesive layer 14, asubstrate 16 and afunction layer 18. - The
substrate 16 has afirst surface 161 and asecond surface 162, which are disposed on opposite sides of thesubstrate 16. Thesubstrate 16 can be divided into a viewable area (not shown) and a non-viewable area (not shown) disposed at one or more sides of the viewable area. In the touch-panel display device 10, sensing electrodes (not shown) of thesensing module 13 are mainly located in the viewable area, while wiring lines and a masking layer (both not shown) are located in the non-viewable area. In an embodiment according to the present invention, thesubstrate 16 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS). - The
display module 12 is located proximal to thefirst surface 161 of thesubstrate 16. In some embodiments, thedisplay module 12 includes a backlit display such as a liquid crystal display (LCD). In other embodiments, thedisplay module 12 includes a self-emissive display such as an organic light emitting diode (OLED) display. Thedisplay module 12 is substantially similar in structure to existing LEDs and OLED displays except that, for example, a polarizer that would otherwise exist in the existing LEDs and OLED displays is eliminated. Instead, a function layer serves as the polarizer. The structure of thedisplay module 12 will be further discussed with reference toFIGS. 1B and 1C . - The
adhesive layer 14 functions to bond together thesubstrate 16 and thedisplay module 12. In some embodiments, theadhesive layer 14 includes optical clear resin (OCR) or optical clear adhesive (OCA). In addition, theadhesive layer 14 may include glue or optically transmissive, double-sided adhesive tape. - The
function layer 18 is located proximal to thesecond surface 162 of thesubstrate 16, and is configured to provide the function of a polarizer. In some embodiments, however, thefunction layer 18 is disposed on thefirst surface 161 of thesubstrate 16. In an embodiment, thefunction layer 18 includes a polarizer configured to polarize light emitting from thedisplay module 12 towards thesubstrate 16. Suitable materials for thefunction layer 18 include highly optically transmissive polymer films such PVA, impregnated with a dichroic material such as iodine or dye. In an embodiment, the masking layer in thesubstrate 16 includes a material selected from black photo resist, black resin or black ink. Furthermore, as will be described in detail, thefunction layer 18 may extend into the non-viewable area so as to alleviate the problem of light leakage. In addition, thefunction layer 18 may fully cover the non-viewable area to reduce color difference between reflected light from the masking layer and that from the viewable area. As a result, the viewable area appears black, and is consistent in color with the non-viewable area, resulting in a real black appearance. Effectively, the sensing electrodes in the viewable area of thesubstrate 16 are concealed from view. Moreover, with the function of polarizing, thefunction layer 18 diminishes reflected light from the sensing electrodes in the viewable area of thesubstrate 16, which facilitates to conceal the sensing electrodes from view. -
FIG. 1B is a schematic view of thedisplay module 12, in accordance with an embodiment of the present invention. Referring toFIG. 1B , thedisplay module 12 includes a liquid crystal (LC) module, which further includes abacklight unit 120, afirst polarizer 121, alower substrate 123, anLC layer 125 and anupper substrate 127. As compared to an existing LCD, the LC module according to the present invention replaces a polarizer (shown in a dotted block) with thefunction layer 18. Thefunction layer 18 serves as a second polarizer for the LC module. In the structure of the LC module, thefirst polarizer 121 is configured to polarize light incident upon theLC layer 125, while the second polarizer (i.e., the function layer 18) is configured to polarize emergent light from theLC layer 125. In an embodiment according to the present invention, in the LC module thefirst polarizer 121 contributes to polarization in a first direction, while thesecond polarizer 18 contributes to polarization in a second direction and is configured to work in conjunction with thefirst polarizer 121 to polarize light emitting from the LC module towards thesubstrate 16. The first direction of polarization and the second direction of polarization are substantially orthogonal to each other. -
FIG. 1C is a schematic view of thedisplay module 12, in accordance with another embodiment of the present invention. Referring toFIG. 1C , thedisplay module 12 includes an OLED module, which further includes alower substrate 122, an organiclight emitting layer 124 and anupper substrate 126. In some existing techniques, certain OLEDs employ metal anodes having relatively high reflectivity. Such OLEDs, when used under intense light in the outdoors, the ambient light may pass through the upper substrate and reflect from the metal anode, resulting in a deteriorated contrast. To enhance the contrast, generally a polarizer would be attached to the upper substrate. A polarized light beam created due to an incident light beam passing the polarizer enters a ¼ lambda compensation film, resulting in a circular polarized light beam having a positive phase shift of 45 degrees. The circular polarized light beam is then reflected by the metal anode, which causes a 180-degree phase shift. Consequently, the reflected circular polarized beam has a phase shift of 135 degrees with respect to the polarized light beam. Another polarized light beam is created after the reflected circular light beam passes the ¼ lambda compensation film in a reverse direction, resulting in a 90-degree phase shift. This polarized light beam now travels in a direction in parallel with the absorbing axis of the polarizer, and thus cannot pass the polarizer. - As compared to the existing OLEDs, the OLED module according to the present invention replaces a polarizer (shown in a dotted block) with the
function layer 18. Thefunction layer 18 serves as a polarizer for the OLED module, and is configured to polarize light emergent from the organic emittinglayer 124 and block light, after incident upon thefirst surface 161 of thesubstrate 16, reflected by theOLED module 12. In an embodiment, thefunction layer 18 serves as a circular polarizer for the OLED module. -
FIG. 2 is a schematic cross-sectional view of a touch-panel display device 20, in accordance with another embodiment of the present invention. Referring toFIG. 2 , the touch-panel display device 20 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference toFIG. 1A except that, for example, the touch-panel display device 20 further includes acoating 25 on thefunction layer 18. In some embodiments according to the present invention, thecoating 25 includes one of an anti-split (AS) film, anti-glare (AG) film, anti-reflection (AR) film and anti-fingerprint (AF) film. - In the case that the
coating 25 functions as an AS film, suitable materials for thecoating 25 include polymethyl methacrylate (PMMA), triacetyl cellulose (TAC), polyethylene terephthalate (PET), polypropylene (PP), cyclo olefin polymer or a combination thereof. In an embodiment according to the present invention, the AS film has a thickness ranging between approximately 20 micrometers (um) and 1000 um. If the thickness is smaller than approximately 20 um, manufacturing complexity and cost may increase. Moreover, if the thickness is greater than approximately 1000 um, the AS film may hinder light from transmission and thus may adversely affect visibility. - In the case that the
coating 25 functions as an AG film, suitable materials for thecoating 25 include silicon dioxide. The haze of the AG film ranges between approximately 1% and 2%, which facilitates light scattering and prevents Newton's rings. - In the case that the
coating 25 functions as an AF film, suitable materials for thecoating 25 include polymer, metal oxide and nano-sol. - In the case that the
coating 25 functions as an AR film, suitable materials for thecoating 25 include chromium (Cr), or fluoride such as Teflon and calcium fluoride (CaF2). -
FIG. 3A is a schematic view of afunction layer 181 of a touch-panel display device 31, in accordance with an embodiment of the present invention. Referring toFIG. 3A , the touch-panel display device 31 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference toFIG. 1A except that, for example, thefunction layer 181 of the touch-panel display device 31 provides anti-glare function in addition to the polarization function. Thefunction layer 181 includes a roughened surface for diffuse reflection of incident light. In an embodiment according to the present invention, the roughened surface is formed by etching, for example, the surface of thefunction layer 181, resulting in a lump-and-pit structure across the surface. The lump-and-pit structure facilitates divergence of incident light. -
FIG. 3B is a schematic view of afunction layer 182 of a touch-panel display device 32, in accordance with an embodiment of the present invention. Referring toFIG. 3B , the touch-panel display device 32 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference toFIG. 1A except that, for example, thefunction layer 182 of the touch-panel display device 32 provides anti-glare function in addition to the polarization function. Thefunction layer 182 includes a hazed surface for diffuse reflection of incident light. In an embodiment according to the present invention, the hazed surface is formed by nano-coating, for example, thefunction layer 182, resulting in a fine-particle structure across the surface. The fine-particle structure facilitates divergence of incident light. -
FIG. 4 is a schematic cross-sectional view of a touch-panel display device 40, in accordance with yet another embodiment of the present invention. Thedisplay module 12 of the touch-panel display device 40 includes an LC module comprising afirst polarizer 121. Referring toFIG. 4 , the touch-panel display device 40 has substantially the same components and structure as the touch-panel display device 10 described and illustrated with reference toFIG. 1A except, for example, afunction layer 48 of the touch-panel display device 40. Thefunction layer 48 is configured to serve as a second polarizer for the touch-panel display device 40, and has a size larger than thefirst polarizer 121. Some existing LCDs are liable to leakage of light because the size of polarizers is smaller than that of the substrate of the LCD. According to the embodiments of the present invention, since thefunctional layer 48 that serves as a second polarizer is separate from the LC module, the second polarizer can be designed with a larger size than thefirst polarizer 121. Effectively, the leakage of light can be alleviated or overcome. The problem of light leakage will be further discussed with reference toFIG. 5B . - In another embodiment according to the present invention, the
display module 12 of the touch-panel display device 40 includes an OLED module. In that case, thefunction layer 48 that serves as a second polarizer has a size not smaller than the OLED module. Effectively, the problem of light leakage can be alleviated or overcome. -
FIG. 5A is a schematic cross-sectional view of a touch-panel display device 50, in accordance with still another embodiment of the present invention. Referring toFIG. 5A , thesubstrate 16 of the touch-panel display device 50 is divided into a viewable area VW and at least one non-viewable area NVW beside the viewable area VW. Sensing electrodes (not shown) of the touch-panel display device 50 are mainly disposed in the viewable area VW, while wiring lines and amasking layer 15 are disposed in the at least one non-viewable area NVW. Moreover, afunction layer 581 of the touch-panel display device 50 covers only the viewable area VW of thesubstrate 16. With this configuration, color difference in the viewable area VW due to a line of etch between an etched region and a non-etched region (such as an ITO region) can be alleviated. Such color difference obviously would adversely affect the appearance of the touch-panel display device 50. Furthermore, since thefunction layer 581 simply covers the viewable area VW of thesubstrate 16, manufacturing cost can hence be decreased. However, a portion of light emitting from thebacklight unit 120 of thedisplay module 12 and passing thesubstrate 16 may not enter thefunction layer 16, and thus may cause the problem of light leakage. -
FIG. 5B is a schematic cross-sectional view of the touch-panel display device 50, in accordance with yet still another embodiment of the present invention. Referring toFIG. 5B , afunction layer 582 of the touch-panel display device 50 not only covers the viewable area VW of thesubstrate 16 but also extends into the at least one non-viewable area NVW. In an embodiment according to the present invention, thefunction layer 582 extends a length d of approximately 0.1 millimeter (mm) to 0.2 mm from the viewable area VW into the at least one non-viewable area NVW. The extended portion of thefunction layer 582 allows the light emitting from thebacklight unit 120 to pass, after times of refraction, the substrate 16 (having an index of refraction of approximately 1.5, substantially equal to that of the adhesive layer 14) and reach thefunction layer 582, as shown by arrows. Effectively, the problem of light leakage is alleviated. -
FIG. 5C is a schematic cross-sectional view of the touch-panel display device 50, in accordance with a further embodiment of the present invention. Referring toFIG. 5C , afunction layer 583 of the touch-panel display device 50 fully covers the viewable area VW and the at least one non-viewable area NVW of thesubstrate 16. With this configuration, thefunction layer 583 reduces the color difference between reflected light from themasking layer 15 and that from the viewable area VW so that the viewable area VW and the at least one non-viewable area NVW appear to have a consistent color. Effectively, the problem of color difference is alleviated. -
FIG. 6A is a schematic cross-sectional view of a touch-panel display device 60, in accordance with an embodiment of the present invention. Referring toFIG. 6A , the touch-panel display device 60 includes a sensing electrode layer 17 on thefirst surface 161 of thesubstrate 16. The sensing electrode layer 17 is attached to thedisplay module 12 by theadhesive layer 14. In an embodiment according to the present invention, the sensing electrode layer 17 is formed in a first pattern in which electrodes are arranged in rows (or columns) and are spaced at regular intervals one row (or column) from another. In another embodiment, the sensing electrode layer 17 is formed in a second pattern in which a set of electrodes arranged in rows is staggered with another set of electrodes arranged in columns. Moreover, suitable materials for the sensing electrode layer 17 include, but are not limited to, metal oxides, nanometals, carbon nanotubes and graphene. -
FIG. 6B is a schematic cross-sectional view of the touch-panel display device 60, in accordance with another embodiment of the present invention. Referring toFIG. 6B , the touch-panel display device 60 includes afirst carrier 661 between thesubstrate 16 and thedisplay module 12. The sensing electrode layer 17, disposed on a surface of thefirst carrier 661, is attached to thesubstrate 16 by a firstadhesive layer 141. Moreover, the opposite surface of thefirst carrier 661 is attached to the display module by a secondadhesive layer 142. In an embodiment according to the present invention, thefirst carrier 661 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS). In some embodiments, the sensing electrode layer 17 is arranged in the above-mentioned first electrode pattern or the second electrode pattern. Moreover, the firstadhesive layer 141 and the secondadhesive layer 142 include optical clear resin or optical clear adhesive. -
FIG. 6C is a schematic cross-sectional view of the touch-panel display device 60, in accordance with yet another embodiment of the present invention. Referring toFIG. 6C , a firstsensing electrode layer 171, disposed on a surface of thefirst carrier 661, is attached to thesubstrate 16 by the firstadhesive layer 141. Moreover, a secondsensing electrode layer 172, disposed on the opposite surface of thefirst carrier 661, is attached to thedisplay module 12 by the secondadhesive layer 142. In an embodiment according to the present invention, the firstsensing electrode layer 171 includes first electrodes arranged in a first direction, while the secondsensing electrode layer 172 includes second electrodes arranged in a second direction, which is substantially orthogonal to the first direction. Moreover, suitable materials for the firstsensing electrode layer 171 and the secondsensing electrode layer 172 include, but are not limited to, metal oxides, nanometals, carbon nanotubes and graphene. -
FIG. 6D is a schematic cross-sectional view of the touch-panel display device 60, in accordance with still another embodiment of the present invention. Referring toFIG. 6D , the firstsensing electrode layer 171 is disposed on a surface of thesubstrate 16, while the secondsensing electrode layer 172 is disposed on a surface of thefirst carrier 661. The firstsensing electrode layer 171 and the secondsensing electrode layer 172 are attached to each other by the firstadhesive layer 141. Moreover, the opposite surface of thefirst carrier 661 is attached to thedisplay module 12 by the secondadhesive layer 142. -
FIG. 6E is a schematic cross-sectional view of the touch-panel display device 60, in accordance with yet still another embodiment of the present invention. Referring toFIG. 6E , the touch-panel display device 60 includes, in addition to thefirst carrier 661 between thesubstrate 16 and thedisplay module 12, asecond carrier 662 between thefirst carrier 661 and thedisplay module 12. The firstsensing electrode layer 171 is disposed on a surface of thefirst carrier 661, while the secondsensing electrode layer 172 is disposed on a surface of thesecond carrier 662. The opposite surface of thefirst carrier 661 is attached to thesubstrate 16 by the firstadhesive layer 141. Moreover, the firstsensing electrode layer 171 and the secondsensing electrode layer 172 are attached to each other by the secondadhesive layer 142. Furthermore, the opposite surface of thesecond carrier 662 is attached to thedisplay module 12 by a thirdadhesive layer 143. In an embodiment according to the present invention, thesecond carrier 662 includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS). In some embodiments, the thirdadhesive layer 143 includes optical clear resin or optical clear adhesive. - Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. For example, embodiments of the present invention may be applicable to single-sided indium tin oxide (SITO) touch panels or double-sided indium tin oxide (DITO) touch panels. The SITO structure includes a diamond-like electrode pattern, in which x-axis electrodes and y-axis electrodes are formed on a same side of a glass substrate. As to the DITO structure, x-axis electrodes and y-axis electrodes are formed on opposite sides of a glass substrate.
- The scope of the present disclosure is not intended to be limited to the particular embodiments of the process, machine, methods and steps described in the specification. As persons having ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, methods or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, methods or steps.
Claims (18)
1. A touch-panel display device, comprising:
a substrate including a first surface and a second surface on opposite sides of the substrate, respectively;
a display module proximal to the first surface of the substrate;
a sensing module between the display module and the substrate; and
a function layer, on either the first surface or the second surface of the substrate, configured to polarize light emitted from the display module toward the substrate.
2. The touch-panel display device of claim 1 , wherein the display module includes a liquid crystal module comprising a first polarizer and a liquid crystal layer, and the function layer serves as a second polarizer for the liquid crystal module, the first polarizer being configured to polarize light incident upon the liquid crystal layer and the function layer being configured to polarize light emergent from the liquid crystal layer, wherein the polarization direction of the first polarizer is orthogonal to that of the function layer.
3. The touch-panel display device of claim 1 , wherein the display module includes an organic light emitting diode (OLED) module comprising an organic light emitting layer, and the function layer serves as a polarizer for the OLED module and is configured to polarize light emergent from the organic light emitting layer.
4. The touch-panel display device of claim 3 , wherein the polarizer includes a circular polarizer.
5. The touch-panel display device of claim 1 , wherein the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer only covers the viewable area.
6. The touch-panel display device of claim 1 , wherein the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and extends into the non-viewable area.
7. The touch-panel display device of claim 6 , wherein the function layer extends a length of 0.1 millimeter (mm) to 0.2 mm from the viewable area into the non-viewable area of the substrate.
8. The touch-panel display device of claim 1 , wherein the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area, and the function layer covers the viewable area and the non-viewable area of the substrate.
9. The touch-panel display device of claim 1 , wherein the further comprising a coating, wherein the coating includes one of an anti-split (AS) film, anti-glare (AG) film, anti-reflection (AR) film and anti-fingerprint (AF) film.
10. The touch-panel display device of claim 1 , wherein the function layer includes an etched surface for diffuse reflection of light incident thereupon.
11. The touch-panel display device of claim 1 , wherein the function layer includes a nano-coating for diffuse reflection of light incident thereupon.
12. The touch-panel display device of claim 1 , wherein the sensing module includes a sensing electrode layer on the first surface of the substrate.
13. The touch-panel display device of claim 12 , wherein the sensing electrode layer includes a material selected from one of metal oxides, nanometals, carbon nanotubes and graphene.
14. The touch-panel display device of claim 12 , wherein the substrate includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
15. The touch-panel display device of claim 1 further comprising a first carrier between the substrate and the display module, wherein the sensing module includes a sensing electrode layer on the first carrier.
16. The touch-panel display device of claim 1 further comprising a first carrier between the substrate and the display module, and a second carrier between the first carrier and the display module, wherein the sensing module includes a first sensing electrode layer on the first carrier, and a second sensing electrode layer on the second carrier.
17. The touch-panel display device of claim 16 , wherein at least one of the first sensing electrode layer or the second sensing electrode layer includes a material selected from one of metal oxides, nanometals, carbon nanotubes and graphene.
18. The touch-panel display device of claim 16 , wherein at least one of the first carrier or the second carrier includes an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410205301.8A CN105094402B (en) | 2014-05-15 | 2014-05-15 | Touch control display device |
CN201410205301.8 | 2014-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150331537A1 true US20150331537A1 (en) | 2015-11-19 |
Family
ID=53188324
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/712,875 Active 2035-05-25 US9874967B2 (en) | 2014-05-15 | 2015-05-14 | Touch-panel display device |
US14/714,197 Abandoned US20150331537A1 (en) | 2014-05-15 | 2015-05-15 | Touch-panel display device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/712,875 Active 2035-05-25 US9874967B2 (en) | 2014-05-15 | 2015-05-14 | Touch-panel display device |
Country Status (3)
Country | Link |
---|---|
US (2) | US9874967B2 (en) |
CN (1) | CN105094402B (en) |
TW (2) | TWI556145B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150331515A1 (en) * | 2014-05-15 | 2015-11-19 | Tpk Touch Solutions (Xiamen) Inc. | Touch-panel display device |
US20160110001A1 (en) * | 2015-12-28 | 2016-04-21 | Caterpillar Inc. | Interactive display system |
US20160375659A1 (en) * | 2013-11-27 | 2016-12-29 | Saint-Gobain Glass France | Laminated glazing for use as a head-up display screen |
TWI637304B (en) * | 2017-10-11 | 2018-10-01 | 大陸商業成科技(成都)有限公司 | Method for manufacturing a touch display device |
US10168811B2 (en) * | 2017-05-01 | 2019-01-01 | Microsoft Technology Licensing, Llc | Reflective display |
US11545651B2 (en) * | 2019-01-02 | 2023-01-03 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Optical film, display screen assembly and display device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106445211B (en) * | 2015-08-05 | 2019-10-15 | 宸盛光电有限公司 | Touch-control module |
US9710689B2 (en) * | 2015-10-30 | 2017-07-18 | Essential Products, Inc. | Fingerprint sensors for mobile devices |
CN105446532A (en) * | 2015-11-19 | 2016-03-30 | 业成光电(深圳)有限公司 | Laminating film structure of touch panel |
CN107025451B (en) * | 2017-04-27 | 2019-11-08 | 上海天马微电子有限公司 | A kind of display panel and display device |
US10845907B2 (en) * | 2018-11-30 | 2020-11-24 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel |
TWI718639B (en) * | 2019-08-23 | 2021-02-11 | 凌巨科技股份有限公司 | Touch display device |
Citations (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6411353B1 (en) * | 1998-04-22 | 2002-06-25 | Hitachi, Ltd. | Liquid crystal display device with its upper and lower cases clamped by crimping portions thereof |
US20030179323A1 (en) * | 2002-02-20 | 2003-09-25 | Adiel Abileah | Light sensitive display |
US20050231487A1 (en) * | 2004-04-16 | 2005-10-20 | Toppoly Optoelectronics Corp. | Method for manufacturing LCD device with integrated touch panel |
US20060007165A1 (en) * | 2004-06-25 | 2006-01-12 | Kei-Hsiung Yang | Input-sensor-intergrated liquid crystal display panel |
US20070263129A1 (en) * | 2006-05-11 | 2007-11-15 | Samsung Electronics Co., Ltd. | Display device and manufacturing method thereof |
US20070279359A1 (en) * | 2006-06-02 | 2007-12-06 | Semiconductor Energy Laboratory Co., Ltd. | Display device and driving method thereof |
US20090160817A1 (en) * | 2007-12-24 | 2009-06-25 | Wintek Corporation | Transparent capacitive touch panel and manufacturing method thereof |
US20110141036A1 (en) * | 2009-12-11 | 2011-06-16 | Jane Hsu | Substrate for touch panel and touch panel |
US20120033168A1 (en) * | 2010-08-09 | 2012-02-09 | Samsung Electronics Co., Ltd. | Liquid crystal display including touch sensor layer and manufacturing method thereof |
US20120127194A1 (en) * | 2009-07-27 | 2012-05-24 | Dolby Laboratories Licensing Corporation | Digital Display Devices And Digital Projectors With Expanded Color Gamut |
US20120200337A1 (en) * | 2011-02-07 | 2012-08-09 | Getac Technology Corporation | Hybrid touch device and manufacturing method thereof |
US20130094220A1 (en) * | 2010-04-23 | 2013-04-18 | Shanghai Ccs Industrial Investment Holding Co., Ltd. | Optical compound sheet for backlight module |
US20130100039A1 (en) * | 2011-10-20 | 2013-04-25 | Seung Jae Hong | Opaque thin film passivation |
US20130135328A1 (en) * | 2011-11-30 | 2013-05-30 | Apple Inc. | Devices and methods for providing access to internal component |
US20140049453A1 (en) * | 2012-08-20 | 2014-02-20 | Samsung Display Co., Ltd. | Display panel |
US20140176826A1 (en) * | 2012-12-24 | 2014-06-26 | Lg Display Co., Ltd. | Touch display device and method of manufacturing the same |
US20140320758A1 (en) * | 2013-04-24 | 2014-10-30 | Quanta Computer Inc. | Touch panel |
US20140340906A1 (en) * | 2012-02-10 | 2014-11-20 | Global And Creative Partinership | Light emitting diode lamp |
US20150123885A1 (en) * | 2013-11-06 | 2015-05-07 | Japan Display Inc. | Display device |
US20150153781A1 (en) * | 2013-11-29 | 2015-06-04 | Inventec Corporation | Touch Control Display Device |
US20150160767A1 (en) * | 2013-12-06 | 2015-06-11 | Lg Display Co., Ltd. | Organic electroluminescent device having touch panel and method for fabricating the same |
US20150220183A1 (en) * | 2014-01-31 | 2015-08-06 | Apple Inc. | Touch sensitive module with integrated sensor and artwork |
US20150228089A1 (en) * | 2014-02-07 | 2015-08-13 | Samsung Electronics Company, Ltd. | Display with high transparency |
US20150285956A1 (en) * | 2012-12-20 | 2015-10-08 | 3M Innovative Properties Company | Method of making multilayer optical film comprising layer-by-layer self-assembled layers and articles |
US20150331515A1 (en) * | 2014-05-15 | 2015-11-19 | Tpk Touch Solutions (Xiamen) Inc. | Touch-panel display device |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003215563A (en) * | 2002-01-25 | 2003-07-30 | Nitto Denko Corp | Optical film and liquid crystal display device using the same |
US20070132918A1 (en) * | 2005-11-25 | 2007-06-14 | Chih-Liang Pan | Flat display |
KR20070078111A (en) * | 2006-01-26 | 2007-07-31 | 삼성전자주식회사 | Polarizer and display apparatus having the same |
US20080030656A1 (en) * | 2006-08-01 | 2008-02-07 | 3M Innovative Properties Company | Transflective lc display with internal reflector and reflective polarizer |
US20090008161A1 (en) * | 2007-07-04 | 2009-01-08 | Jones Christopher W | Capacitive sensor array and gesture recognition |
TWI373665B (en) * | 2008-12-25 | 2012-10-01 | Au Optronics Corp | Touch panel structure |
JP4968276B2 (en) * | 2009-02-24 | 2012-07-04 | ソニー株式会社 | Display device and manufacturing method thereof |
US9489072B2 (en) * | 2010-04-15 | 2016-11-08 | Atmel Corporation | Noise reduction in capacitive touch sensors |
EP2447762B1 (en) * | 2010-10-28 | 2013-10-09 | Lg Electronics Inc. | Display apparatus |
CN102566837A (en) * | 2010-12-17 | 2012-07-11 | 东莞联胜液晶显示器有限公司 | Touch display device |
WO2013069683A1 (en) * | 2011-11-07 | 2013-05-16 | 王子ホールディングス株式会社 | Display device with capacitive touch panel, capacitive touch panel |
TWI467526B (en) * | 2012-01-20 | 2015-01-01 | Innocom Tech Shenzhen Co Ltd | Touch display apparatus and method for fabricating the same |
TWI520398B (en) * | 2012-06-15 | 2016-02-01 | 群康科技(深圳)有限公司 | Organic light-emitting device and image display system employing the same |
KR102035610B1 (en) * | 2012-06-20 | 2019-10-23 | 삼성전자주식회사 | Backlight unit comprising white light source and blue light source, display panel comprising the backlight unit, display apparatus comprising the display panel and display method thereof |
JP6277576B2 (en) * | 2012-08-03 | 2018-02-14 | 大日本印刷株式会社 | Optical film substrate, optical film, polarizing plate, liquid crystal panel, and image display device |
TWI596751B (en) * | 2012-08-30 | 2017-08-21 | 財團法人工業技術研究院 | Flexible display and method for fabricating the same |
CN102955191A (en) * | 2012-10-12 | 2013-03-06 | 华映视讯(吴江)有限公司 | Polarizer as well as touch control liquid crystal panel and touch control display of polarizer |
CN103914164A (en) * | 2013-01-05 | 2014-07-09 | 宸鸿光电科技股份有限公司 | Touch panel |
KR102096046B1 (en) * | 2013-02-28 | 2020-04-02 | 삼성디스플레이 주식회사 | Display deivce and manufacturing method of the same |
KR102111628B1 (en) * | 2013-07-25 | 2020-06-09 | 삼성디스플레이 주식회사 | flexible touch screen panel and flexible display device with the same |
KR101444132B1 (en) * | 2013-11-20 | 2014-11-04 | 동우 화인켐 주식회사 | Touch sensing electrode combined with complexed polarization plate and touch screen panel comprising the same |
KR20150092777A (en) * | 2014-02-05 | 2015-08-17 | 삼성디스플레이 주식회사 | Display device and method of manufacturing a display device |
TWI531939B (en) * | 2014-04-22 | 2016-05-01 | 群創光電股份有限公司 | Touch panels |
TWI599489B (en) * | 2014-04-25 | 2017-09-21 | 財團法人工業技術研究院 | Panel encapsulation structure |
CN203909746U (en) * | 2014-05-15 | 2014-10-29 | 宸鸿科技(厦门)有限公司 | Touch display device |
JP6246089B2 (en) * | 2014-07-17 | 2017-12-13 | 富士フイルム株式会社 | Display device with conductive film and touch panel |
KR102207545B1 (en) * | 2014-09-25 | 2021-01-26 | 동우 화인켐 주식회사 | Touch sensing electrode with polarizing plate and display device comprising the same, and manufacturing method thereof |
-
2014
- 2014-05-15 CN CN201410205301.8A patent/CN105094402B/en active Active
- 2014-09-02 TW TW103130198A patent/TWI556145B/en active
- 2014-09-02 TW TW103215648U patent/TWM497812U/en unknown
-
2015
- 2015-05-14 US US14/712,875 patent/US9874967B2/en active Active
- 2015-05-15 US US14/714,197 patent/US20150331537A1/en not_active Abandoned
Patent Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6411353B1 (en) * | 1998-04-22 | 2002-06-25 | Hitachi, Ltd. | Liquid crystal display device with its upper and lower cases clamped by crimping portions thereof |
US20030179323A1 (en) * | 2002-02-20 | 2003-09-25 | Adiel Abileah | Light sensitive display |
US20080055295A1 (en) * | 2002-02-20 | 2008-03-06 | Planar Systems, Inc. | Light sensitive display |
US20050231487A1 (en) * | 2004-04-16 | 2005-10-20 | Toppoly Optoelectronics Corp. | Method for manufacturing LCD device with integrated touch panel |
US20060007165A1 (en) * | 2004-06-25 | 2006-01-12 | Kei-Hsiung Yang | Input-sensor-intergrated liquid crystal display panel |
US20070263129A1 (en) * | 2006-05-11 | 2007-11-15 | Samsung Electronics Co., Ltd. | Display device and manufacturing method thereof |
US20070279359A1 (en) * | 2006-06-02 | 2007-12-06 | Semiconductor Energy Laboratory Co., Ltd. | Display device and driving method thereof |
US8294677B2 (en) * | 2007-12-24 | 2012-10-23 | Wintek Corporation | Transparent capacitive touch panel and manufacturing method thereof |
US20110199332A1 (en) * | 2007-12-24 | 2011-08-18 | Wintek Corporation | Capacitive touch panel and electrode structure thereof |
US20090160817A1 (en) * | 2007-12-24 | 2009-06-25 | Wintek Corporation | Transparent capacitive touch panel and manufacturing method thereof |
US20120127194A1 (en) * | 2009-07-27 | 2012-05-24 | Dolby Laboratories Licensing Corporation | Digital Display Devices And Digital Projectors With Expanded Color Gamut |
US20110141036A1 (en) * | 2009-12-11 | 2011-06-16 | Jane Hsu | Substrate for touch panel and touch panel |
US20130094220A1 (en) * | 2010-04-23 | 2013-04-18 | Shanghai Ccs Industrial Investment Holding Co., Ltd. | Optical compound sheet for backlight module |
US20120033168A1 (en) * | 2010-08-09 | 2012-02-09 | Samsung Electronics Co., Ltd. | Liquid crystal display including touch sensor layer and manufacturing method thereof |
US8289457B2 (en) * | 2010-08-09 | 2012-10-16 | Samsung Display Co., Ltd. | Liquid crystal display including touch sensor layer and manufacturing method thereof |
US20120200337A1 (en) * | 2011-02-07 | 2012-08-09 | Getac Technology Corporation | Hybrid touch device and manufacturing method thereof |
US20130100039A1 (en) * | 2011-10-20 | 2013-04-25 | Seung Jae Hong | Opaque thin film passivation |
US20130135328A1 (en) * | 2011-11-30 | 2013-05-30 | Apple Inc. | Devices and methods for providing access to internal component |
US20140340906A1 (en) * | 2012-02-10 | 2014-11-20 | Global And Creative Partinership | Light emitting diode lamp |
US20140049453A1 (en) * | 2012-08-20 | 2014-02-20 | Samsung Display Co., Ltd. | Display panel |
US20150285956A1 (en) * | 2012-12-20 | 2015-10-08 | 3M Innovative Properties Company | Method of making multilayer optical film comprising layer-by-layer self-assembled layers and articles |
US20140176826A1 (en) * | 2012-12-24 | 2014-06-26 | Lg Display Co., Ltd. | Touch display device and method of manufacturing the same |
US20140320758A1 (en) * | 2013-04-24 | 2014-10-30 | Quanta Computer Inc. | Touch panel |
US20150123885A1 (en) * | 2013-11-06 | 2015-05-07 | Japan Display Inc. | Display device |
US20150153781A1 (en) * | 2013-11-29 | 2015-06-04 | Inventec Corporation | Touch Control Display Device |
US20150160767A1 (en) * | 2013-12-06 | 2015-06-11 | Lg Display Co., Ltd. | Organic electroluminescent device having touch panel and method for fabricating the same |
US20150220183A1 (en) * | 2014-01-31 | 2015-08-06 | Apple Inc. | Touch sensitive module with integrated sensor and artwork |
US20150228089A1 (en) * | 2014-02-07 | 2015-08-13 | Samsung Electronics Company, Ltd. | Display with high transparency |
US20150331515A1 (en) * | 2014-05-15 | 2015-11-19 | Tpk Touch Solutions (Xiamen) Inc. | Touch-panel display device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160375659A1 (en) * | 2013-11-27 | 2016-12-29 | Saint-Gobain Glass France | Laminated glazing for use as a head-up display screen |
US9770888B2 (en) * | 2013-11-27 | 2017-09-26 | Saint-Gobain Glass France | Laminated glazing for use as a head-up display screen |
US20150331515A1 (en) * | 2014-05-15 | 2015-11-19 | Tpk Touch Solutions (Xiamen) Inc. | Touch-panel display device |
US9874967B2 (en) * | 2014-05-15 | 2018-01-23 | Tpk Touch Solutions (Xiamen) Inc. | Touch-panel display device |
US20160110001A1 (en) * | 2015-12-28 | 2016-04-21 | Caterpillar Inc. | Interactive display system |
US10168811B2 (en) * | 2017-05-01 | 2019-01-01 | Microsoft Technology Licensing, Llc | Reflective display |
TWI637304B (en) * | 2017-10-11 | 2018-10-01 | 大陸商業成科技(成都)有限公司 | Method for manufacturing a touch display device |
US11545651B2 (en) * | 2019-01-02 | 2023-01-03 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Optical film, display screen assembly and display device |
Also Published As
Publication number | Publication date |
---|---|
TWI556145B (en) | 2016-11-01 |
CN105094402B (en) | 2018-06-12 |
TW201543291A (en) | 2015-11-16 |
US9874967B2 (en) | 2018-01-23 |
CN105094402A (en) | 2015-11-25 |
US20150331515A1 (en) | 2015-11-19 |
TWM497812U (en) | 2015-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9874967B2 (en) | Touch-panel display device | |
US8228306B2 (en) | Integration design for capacitive touch panels and liquid crystal displays | |
AU2011313001B2 (en) | Slim type touch panel and mobile terminal including the same | |
US20180004254A1 (en) | Window cover and display apparatus having the same and method of manufacturing display apparatus | |
TWI525499B (en) | Touch display panel | |
US9740318B2 (en) | Display device including a touch screen panel formed at an entire window | |
US9036240B2 (en) | Electronic paper display | |
CN203909746U (en) | Touch display device | |
TW201541324A (en) | Touch display panel | |
US7259804B2 (en) | Method for fabricating touch panel integrated liquid crystal display device | |
US10331254B2 (en) | Touch organic light-emitting diode display device and touch device | |
US20110063244A1 (en) | Optical film and display module using the same | |
US9513735B2 (en) | Touch display device with first and second adhesive assemblies | |
TWI534506B (en) | Display device | |
TW201419062A (en) | Touch display | |
JP2008158911A (en) | Touch panel and display device equipped with the same | |
US20160041658A1 (en) | Display device | |
US20140254013A1 (en) | Optical member with double rainbow film | |
US9612388B2 (en) | Front light guide module and electrophoresis display having the same | |
US11550176B2 (en) | Display device comprising an electronically controlled phase retardation module having a conductive layer formed directly on a substrate of a polarizing film | |
CN103092377B (en) | Contact panel and apply the touch control display of its contact panel | |
US20160034084A1 (en) | Touch display device | |
TWI546712B (en) | Touch display device | |
TWI529595B (en) | Touch display panel | |
KR20220005199A (en) | Display Device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |