CN106019676B - Display substrate and display panel - Google Patents
Display substrate and display panel Download PDFInfo
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- CN106019676B CN106019676B CN201610618109.0A CN201610618109A CN106019676B CN 106019676 B CN106019676 B CN 106019676B CN 201610618109 A CN201610618109 A CN 201610618109A CN 106019676 B CN106019676 B CN 106019676B
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- pressure detection
- display
- substrate
- display panel
- touch electrode
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- 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
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a display substrate and a display panel, belongs to the technical field of pressure detection of display devices, and can at least partially solve the problems of complex structure, high manufacturing difficulty and high cost of the existing display device capable of realizing pressure detection. The display substrate of the present invention is divided into a plurality of pixel regions for display and a non-display region located between adjacent pixel regions, and includes: a substrate; a pressure detection line made of metal material and arranged in the non-display area; and the plurality of conductive shock insulators are arranged above the pressure detection lines and electrically connected with the pressure detection lines.
Description
Technical Field
The invention belongs to the technical field of pressure detection of display devices, and particularly relates to a display substrate and a display panel.
Background
Many conventional display devices have a pressure detection function, i.e., can detect the pressure applied to the display panel, in addition to a touch function.
However, the conventional pressure detection structure cannot be combined with a structure for realizing display and touch control (i.e., cannot realize In Cell), and a separate pressure detection substrate specially used for detecting pressure needs to be arranged outside the display panel, so that the structure of the display device is complex, the manufacturing difficulty is high, and the cost is high.
Disclosure of Invention
The invention at least partially solves the problems of complex structure, high manufacturing difficulty and high cost of the existing display device capable of realizing pressure detection, and provides the display substrate which has simple structure, easy manufacture and low cost.
The technical scheme adopted for solving the technical problem of the invention is a display substrate which is divided into a plurality of pixel areas arranged at intervals and a non-display area positioned outside the pixel areas, and the display substrate comprises:
a substrate;
a pressure detection line made of metal material and arranged in the non-display area;
and the plurality of conductive shock insulators are arranged above the pressure detection lines and electrically connected with the pressure detection lines.
Preferably, the pressure detection lines are formed in a mesh shape.
Preferably, the conductive spacer is doped with nano conductive particles.
Further preferably, the nano conductive particles are selected from any one or more of gold, silver, copper, iron, aluminum, indium oxide, graphene and carbon nanotubes.
Further preferably, the mass percentage of the nano conductive particles in the spacer is between 1% and 30%.
Preferably, the display substrate further includes: and the touch electrodes are made of transparent conductive materials and are arranged at the positions of the non-pressure detection lines.
It is further preferred that at least a portion of the touch electrode is located in the non-display area; the display substrate further comprises an auxiliary conducting layer arranged on the same layer as the pressure detection line, and the auxiliary conducting layer is arranged above or below the touch electrode in the non-display area and is in contact with the touch electrode in the non-display area.
Further preferably, the display substrate further includes: and the middle conducting layer is arranged on the same layer as the touch electrode, is arranged above or below the pressure detection line and is in contact with the pressure detection line.
Preferably, the display substrate is an array substrate for liquid crystal display, and the touch electrode is a self-capacitance touch electrode and is multiplexed as a common electrode in a time-sharing manner.
The technical scheme adopted for solving the technical problem of the invention is a display panel, which comprises:
the display substrate described above;
the box aligning substrate is aligned with the display substrate, and one side, provided with the pressure detection lines and the spacers, of the display substrate faces the box aligning substrate;
and the pressure detection unit is electrically connected with the pressure detection line and is used for detecting the resistance change of the spacer.
The display substrate is provided with the pressure detection lines and the spacers, and the deformation of the spacers is determined by detecting the resistance of the spacers so as to determine the pressure applied to the display substrate, so that the pressure detection structure is simple (only the pressure detection lines are added, and the spacers are the original structure of the display substrate), the display substrate can be combined with the structure for realizing display and touch control (namely In Cell can be realized), and no separate pressure detection substrate is required to be arranged, so that the display device is simple In structure, easy to manufacture and low In cost.
Drawings
Fig. 1 is a schematic structural diagram of a display substrate according to an embodiment of the invention;
FIG. 2 is a schematic view of the cross-sectional view taken along line AA' of FIG. 1;
FIG. 3 is a schematic diagram of driving signals applied to touch electrodes according to an embodiment of the invention;
wherein the reference numerals are: 1. a pressure detection line; 11. an auxiliary conductive layer; 18. lead-out wires 2 and spacers; 3. a touch electrode; 31. an intermediate conductive layer; 9. a substrate; 91. a pixel region; 92. a non-display area; 8. a detection circuit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the present invention, "a is located above B" or "B is located below a" means: a and B are arranged on the same side of the substrate, and the projection of A and B on the substrate at least partially coincide, and in the coinciding part, A is positioned on the side of B far away from the substrate (namely B is positioned on the side of A close to the substrate).
In the present invention, "a and B are disposed in the same layer" means: a and B are formed from the same material layer through a patterning process (which may include one or more of the steps of forming a complete material layer, applying photoresist, exposing, developing, etching, stripping photoresist, etc.), and thus belong to the same layer in a stacked relationship, but this does not mean that the distances between a and B and the substrate are necessarily equal.
Example 1:
as shown in fig. 1 to fig. 3, the present embodiment provides a display substrate, which is divided into a plurality of pixel regions 91 disposed at intervals and a non-display region 92 located outside the pixel regions 91, and the display substrate includes:
a substrate 9;
a pressure detection line 1 made of a metal material and provided in the non-display region 92;
and the plurality of conductive spacers 2 are arranged above the pressure detection line 1 and are electrically connected with the pressure detection line 1.
As shown in fig. 1, the non-display area 92 of the display substrate of the present embodiment is provided with metal pressure detection lines 1, and a plurality of spacers 2 are provided on the pressure lines. When the display panel constituted by the display substrate and the counter substrate is subjected to pressure, the counter substrate presses the spacer 2 and causes it to deform. Since the resistance of the conductor is inversely proportional to the cross-sectional area thereof, the deformation of the spacer 2 causes a change in the resistance thereof (the deformation of the spacer 2 corresponds to a change in the cross-sectional area of a part of the system, and thus a change in the total resistance thereof, in the entire conductive system constituted by the pressure detecting line 1 and the spacer 2). Therefore, the pressure applied to the display panel can be determined by detecting the resistance change of the spacer 2, and the pressure detection is realized.
The display substrate is provided with the pressure detection lines 1 and the spacers 2, and the deformation of the spacers 2 is determined by detecting the resistance of the spacers 2, so that the pressure borne by the display substrate is determined, therefore, the pressure detection structure is simple (only the pressure detection lines 1 are added, and the spacers 2 are the original structure of the display substrate), the display substrate can be combined with the structure for realizing display and touch control (namely InCell can be realized), and no separate pressure detection substrate is required to be arranged, so that the display device is simple in structure, easy to manufacture and low in cost.
Preferably, the pressure sensing lines 1 are formed in a grid shape.
That is, as shown in fig. 1, the pressure detection lines 1 may have a grid structure including a plurality of lines intersecting in the horizontal and vertical directions, and the grid-like pressure detection lines 1 may have a low and uniform resistance as a whole, thereby facilitating detection of a change in the resistance of the spacer 2.
Of course, it is also feasible that there are a plurality of independent pressure detection lines 1 (e.g., a plurality of pressure detection lines 1 extending in the column direction), and spacers 2 are respectively disposed thereon, so as to respectively detect pressures applied to different positions of the display panel.
Preferably, the spacer 2 is doped with nano conductive particles. More preferably, the nano conductive particles are selected from any one or more of gold, silver, copper, iron, aluminum, indium oxide, graphene and carbon nanotubes. More preferably, the mass percentage of the nano conductive particles in the spacer is between 1% and 30%.
That is, the above spacer 2 may be doped with 1% to 30% of particles of gold, silver, copper, iron, aluminum, indium oxide, graphene, carbon nanotube, etc. with a size of nanometer (1 to 100 nanometers) to improve the conductivity.
Preferably, the display substrate further includes a plurality of touch electrodes 3 made of a transparent conductive material (e.g., indium tin oxide), and the touch electrodes 3 are disposed at the positions of the non-pressure detection lines 1.
That is to say, as shown in fig. 1 and fig. 2, the display substrate of the present embodiment may further include a touch electrode 3 for realizing touch control, so that the pressure detection and the touch function are integrated, and the structure of the product is simplified. Obviously, the above touch electrode 3 should be disposed at a position where there is no pressure detection line 1, so as not to interfere with each other.
More preferably, at least a portion of the touch electrode 3 is located in the non-display region 92; the display substrate further includes an auxiliary conductive layer 11 disposed on the same layer as the pressure detection line 1, wherein the auxiliary conductive layer 11 is disposed above or below the touch electrode 3 in the non-display area 92 and contacts the touch electrode 3 in the non-display area 92.
Generally, the touch electrodes 3 are not only located in the pixel region 91, but are distributed in both the pixel region 91 and the non-display region 92, and for this reason, the pressure detection lines 1 can be formed while corresponding metal layers are reserved on (or under) the touch electrodes 3 in the non-display region 92 as the auxiliary conductive layers 11, so as to reduce the resistance of the touch electrodes 3 and improve the sensitivity of touch detection. Since the auxiliary conductive layer 11 is formed in synchronization with the pressure sensing line 1, it is not required to add a separate process, and the fabrication is simple.
More preferably, the display substrate further includes an intermediate conductive layer 31 disposed on the same layer as the touch electrode 3, and the intermediate conductive layer 31 is disposed above or below the pressure detection line 1 and contacts the pressure detection line 1.
Obviously, in the position of the pressure detection line 1, the transparent conductive layer constituting the touch electrode 3 may also be reserved as the intermediate conductive layer 31, so as to reduce the resistance of the pressure detection line 1 and improve the accuracy of pressure detection. Of course, since the middle conductive layer 31 and the touch electrode 3 are disposed on the same layer, a separate manufacturing process is not required.
More preferably, the display substrate is an array substrate of a liquid crystal display, and the touch electrode 3 is a self-capacitance touch electrode 3 and is time-division multiplexed as a common electrode.
That is, the touch electrode 3 is preferably configured in a self-contained mode, that is, a plurality of independent touch electrodes 3 are provided on the display substrate, and the touch can be realized by applying a high-frequency signal to each touch electrode 3 and detecting a feedback signal generated by each electrode itself. Generally, the common electrode (touch electrode 3) of this type should be located above the pixel electrode, and in the form of a slit electrode in the pixel region 91. The advantage of adopting the above method is that each touch electrode 3 is independent "block", so it can be distributed in the grid of the grid-shaped pressure detection line 1, and the design is simple.
When the display substrate is an array substrate for liquid crystal display, the self-capacitance touch electrode 3 can be also time-division multiplexed as a common electrode for liquid crystal display. That is, as shown in fig. 3, the operation of the display substrate is divided into a display stage and a touch stage, the touch electrode 3 provides a common voltage in the display stage to be used as the common electrode, and provides a high frequency signal (of course, a feedback signal thereof is also detected) in the touch stage to be used as the touch electrode 3, so as to implement time division multiplexing.
Of course, in the above display substrate, other structures, such as a thin film transistor, a gate line, a data line, a passivation layer, a pixel electrode, etc., may be further included, and will not be described in detail herein.
The present embodiment provides a display panel, which includes:
the display substrate described above;
the box aligning substrate is aligned with the display substrate, and one side of the display substrate, which is provided with the pressure detection line 1 and the spacer 2, faces the box aligning substrate;
and a pressure detection unit electrically connected to the pressure detection line 1 for detecting a change in resistance of the spacer 2.
The display panel of the present embodiment includes the display substrate described above, so that it can implement pressure detection with a simple structure. Of course, in order to perform the pressure detection, the above pressure detection lines 1 (and the spacers 2) should be located inside the display panel so as to apply pressure to the spacers 2 when the display panel is pressed. Meanwhile, since the pressure detection is performed by the resistance of the spacer 2, the display panel needs to be provided with a pressure detection unit capable of detecting the change in the resistance of the spacer 2. Of course, the pressure detection means actually detects the total resistance of the conductive system formed by the spacer 2 and the pressure detection line 1, but since the pressure detection line 1 is metallic, it is hardly deformed and the resistance is almost unchanged, the change in resistance at the detection point is the change in resistance of the spacer 2.
Specifically, as shown in fig. 2, the pressure detection unit may be a detection circuit 8, a detection chip, or the like, and may be connected to the pressure detection line 1 through a lead line 18. Thus, the detection circuit 8 can feed a signal to one of the outgoing lines 18 and detect a signal from the other outgoing line 18, so that the total resistance of the conductive system provided between the two outgoing lines 18 can be determined, and the change in resistance is the change in resistance of the spacer 2 therein.
Of course, the method of detecting the resistance may be various, and for example, an electrode in contact with the spacer 2 may be provided on the inner side of the cartridge substrate, and a signal may be sent to the spacer 2 and the pressure detection line 1 via the electrode to detect a change in the resistance of the spacer 2.
Specifically, the display panel of the embodiment may be any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A display panel, comprising:
a display substrate divided into a plurality of pixel regions arranged at intervals and a non-display region located outside the pixel regions, the display substrate comprising: a substrate; the pressure detection lines are made of metal materials and arranged in the non-display area, and the pressure detection lines form a grid shape; the plurality of conductive shock insulators are arranged above the pressure detection lines and electrically connected with the pressure detection lines;
the box aligning substrate is aligned with the display substrate, and one side, provided with the pressure detection lines and the spacers, of the display substrate faces the box aligning substrate;
and the pressure detection unit is a detection circuit and is connected with the pressure detection line through an outgoing line, the detection circuit can input a signal to one outgoing line and detect a signal of the other outgoing line so as to determine the total resistance of a conductive system arranged between the two outgoing lines, and therefore the change of the resistance of the spacer is determined.
2. The display panel according to claim 1,
the conductive spacer is doped with nano conductive particles.
3. The display panel according to claim 2,
the nano conductive particles are selected from any one or more of gold, silver, copper, iron, aluminum, indium oxide, graphene and carbon nanotubes.
4. The display panel according to claim 2,
the mass percentage of the nano conductive particles in the spacer is between 1% and 30%.
5. The display panel according to claim 1, further comprising:
and the touch electrodes are made of transparent conductive materials and are arranged at the positions of the non-pressure detection lines.
6. The display panel according to claim 5,
at least one part of the touch electrode is positioned in the non-display area;
the display substrate further comprises an auxiliary conducting layer arranged on the same layer as the pressure detection line, and the auxiliary conducting layer is arranged above or below the touch electrode in the non-display area and is in contact with the touch electrode in the non-display area.
7. The display panel according to claim 5, further comprising:
and the middle conducting layer is arranged on the same layer as the touch electrode, is arranged above or below the pressure detection line and is in contact with the pressure detection line.
8. The display panel according to claim 5,
the display substrate is an array substrate of liquid crystal display, and the touch electrode is a self-capacitance touch electrode and is multiplexed into a common electrode in a time-sharing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618109.0A CN106019676B (en) | 2016-07-29 | 2016-07-29 | Display substrate and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618109.0A CN106019676B (en) | 2016-07-29 | 2016-07-29 | Display substrate and display panel |
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| CN106019676A CN106019676A (en) | 2016-10-12 |
| CN106019676B true CN106019676B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610618109.0A Expired - Fee Related CN106019676B (en) | 2016-07-29 | 2016-07-29 | Display substrate and display panel |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646472B (en) * | 2018-07-09 | 2021-04-02 | 京东方科技集团股份有限公司 | Display panel, display device and preparation method of display panel |
| US11980070B2 (en) | 2020-06-15 | 2024-05-07 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display panel and display apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739087A (en) * | 2003-01-20 | 2006-02-22 | 皇家飞利浦电子股份有限公司 | Touch sensitive display device |
| CN101825787A (en) * | 2009-03-04 | 2010-09-08 | 北京京东方光电科技有限公司 | Touch display screen and manufacture method thereof |
| CN102667678A (en) * | 2009-11-20 | 2012-09-12 | 夏普株式会社 | Flexible display panel with touch sensor function |
| CN105607356A (en) * | 2016-01-04 | 2016-05-25 | 京东方科技集团股份有限公司 | Display panel and pressure induction method therefor |
-
2016
- 2016-07-29 CN CN201610618109.0A patent/CN106019676B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739087A (en) * | 2003-01-20 | 2006-02-22 | 皇家飞利浦电子股份有限公司 | Touch sensitive display device |
| CN101825787A (en) * | 2009-03-04 | 2010-09-08 | 北京京东方光电科技有限公司 | Touch display screen and manufacture method thereof |
| CN102667678A (en) * | 2009-11-20 | 2012-09-12 | 夏普株式会社 | Flexible display panel with touch sensor function |
| CN105607356A (en) * | 2016-01-04 | 2016-05-25 | 京东方科技集团股份有限公司 | Display panel and pressure induction method therefor |
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| CN106019676A (en) | 2016-10-12 |
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Granted publication date: 20201106 Termination date: 20210729 |