WO2019006828A1 - 显示面板及应用的显示装置 - Google Patents

显示面板及应用的显示装置 Download PDF

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Publication number
WO2019006828A1
WO2019006828A1 PCT/CN2017/097882 CN2017097882W WO2019006828A1 WO 2019006828 A1 WO2019006828 A1 WO 2019006828A1 CN 2017097882 W CN2017097882 W CN 2017097882W WO 2019006828 A1 WO2019006828 A1 WO 2019006828A1
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WIPO (PCT)
Prior art keywords
substrate
module
image sensing
disposed
sensing module
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PCT/CN2017/097882
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English (en)
French (fr)
Inventor
卓恩宗
杨凤云
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惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Priority to US15/578,501 priority Critical patent/US10225458B2/en
Publication of WO2019006828A1 publication Critical patent/WO2019006828A1/zh

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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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the present application relates to a display panel and a display device therefor, and more particularly to a display panel having an adjustable zoom and a display device that is not affected by the depth of field.
  • Depth of field refers to the relatively clear imaging range of the image sensing device before and after the focus.
  • optics especially video or photography
  • the lens can only concentrate the light to a fixed distance, and it will gradually blur away from this point.
  • the degree of image blur is not visible to the naked eye. This distance is called the depth of field.
  • the image sensing component requires a variable zoom capability.
  • an image sensor and a display panel are combined to form a multi-function display, which can achieve both image scanning and display, and image scanning functions such as a computer camera and a computer eye.
  • a video input device is widely used in video conferencing, telemedicine and real-time monitoring.
  • the communication parties can each have images on the network through video input devices.
  • voice conversations and communication in addition, people can also use it for the current popular digital image, audio and video processing, playing an increasingly important role in people's lives and work.
  • the image sensing module used has a fixed focal length range, so its imaging effect is poorly affected by the depth of field.
  • the traditional glass or plastic lens has a single focal length and does not have the function of adjusting the zoom distance.
  • two or more conventional lens combinations are required, and with a voice coil motor or a piezoelectric actuator, the relative distance of the lens in the mirror group is changed to adjust the mirror group equivalent.
  • the focal length however, the volume of the voice coil motor itself makes the traditional auto-focus module too large, which makes the application difficult.
  • an object of the present application is to provide a display panel and a display device for the application, and more particularly to a display panel having an adjustable zoom and a display device that is not affected by the depth of field, and the display device thereof is adapted to the present Most of the devices are light, thin and short, which greatly enhances their usability.
  • the technical problem solved by the present application is to use a combination of an image sensor module with adjustable zoom and a lens module (Lens Array) in a thin film transistor liquid crystal panel (TFT LCD), and combine the imaging principle of the lens.
  • the image sensing module and the TFT panel are used to image or scan the object without being limited by the depth of field, and the effect of the adjustable zoom can be achieved to overcome the problems of the prior art.
  • the lens module used in the present application is fabricated by using wafer level manufacturing technology, so there is no excessive volume. The problem is to facilitate the application of light and short portable products.
  • the present application provides a display panel including: a first substrate; a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and an image sensing module disposed on the first a side of the second substrate facing the first substrate; the lens module is disposed on a side of the first substrate facing the second substrate, and corresponding to the position of the image sensing module, focusing the image light to The image sensing module and the active switch array module are disposed on a side of the second substrate facing the first substrate for driving liquid crystal uniformly distributed in the liquid crystal layer; wherein the image sensing module receives The image light of the lens module is focused and modulated to adjust a focal length of the image sensing module.
  • the image sensing module is disposed in parallel with the active switch array module.
  • the image sensing module includes a light sensor, and the light sensor is a photodiode or a photo transistor.
  • the photosensor is made of an organic or inorganic material having a narrow band gap of less than 1.12 eV.
  • the photosensor is made of amorphous silicon, microcrystalline silicon, polycrystalline silicon or mercury cadmium telluride semiconductor material having a narrow gap of less than 1.12 eV.
  • the lens module is fabricated using a wafer level manufacturing technique.
  • the lens module is made of optical grade glass, polymethyl methacrylate or carbonate resin.
  • an opaque region is further disposed between the first substrate and the lens module, and the material used is effective to block the penetration of visible light, and only allows the infrared light band to pass through.
  • Another object of the present application is an image sensing display device comprising: a direct-lit or edge-lit backlight module; a control component; and a display panel comprising: a first substrate; a second substrate; and a liquid crystal layer disposed on Between the first substrate and the second substrate; an image sensing module disposed on a side of the second substrate facing the first substrate; and a lens module disposed on the first substrate facing the a side of the second substrate, and corresponding to the position of the image sensing module, focusing the image light to the image sensing module; and an active switch array module disposed on the second substrate facing the first substrate
  • the image sensing module receives the image light that is focused by the lens module and modulates the focal length of the image sensing module.
  • the image sensing module is disposed in parallel with the active switch array module.
  • the image sensing module includes a light sensor.
  • the photosensor is a photodiode.
  • the photosensor is a photo transistor.
  • the photosensor is made of an organic or inorganic material having a narrow band gap of less than 1.12 eV.
  • the lens module is fabricated using a wafer level manufacturing technique.
  • the lens module is made of optical grade glass.
  • the lens module is made of polymethyl methacrylate.
  • the lens module is made of a carbonate resin.
  • an opaque region is further disposed between the first substrate and the lens module for traversing the infrared light band.
  • the present application provides another display panel, including: a first substrate; a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and an image sensing module disposed on the
  • the image sensing module includes a light sensor, and the lens module is disposed on a side of the first substrate facing the second substrate and corresponds to the image.
  • a position of the sensing module for focusing image light onto the image sensing module, the lens module is made of an optical grade material and fabricated by a wafer level manufacturing technique; and an active switch array module is disposed at the
  • the second substrate faces the side of the first substrate and is disposed in parallel with the image sensing module.
  • the first substrate and the lens module are further disposed to pass through only the infrared light band.
  • the image sensing module is configured to receive the image light after the lens module is focused and to adjust the focal length of the image sensing module.
  • the effect of the adjustable zooming is achieved by using the additional lens module and the image sensing module inside the TFT liquid crystal display panel, which can be overcome by the depth of field and effectively overcome the aforementioned device application problem. Further, This device can be used to implement image recognition and vein sensing functions.
  • FIG. 1A is a schematic diagram of a display panel with adjustable zoom according to an embodiment of the present application.
  • FIG. 1B is a schematic diagram of a path of image sensing converted to an electrical signal according to an embodiment of the present application.
  • FIG. 1C is a schematic diagram of a path of image sensing converted to an electrical signal according to another embodiment of the present application.
  • FIG. 2A is a schematic diagram of a display panel with adjustable zoom according to another embodiment of the present application.
  • FIG. 2B is a schematic diagram of a path of image sensing converted to an electrical signal according to another embodiment of the present application.
  • 2C is a schematic diagram of a path of image sensing converted to an electrical signal according to still another embodiment of the present application.
  • FIG. 3A is a schematic diagram of a display panel with adjustable zoom according to still another embodiment of the present application.
  • FIG. 3B is a schematic diagram of a path of image sensing converted to an electrical signal according to still another embodiment of the present application.
  • FIG. 3C is a schematic diagram of a path of image sensing converted to an electrical signal according to still another embodiment of the present application.
  • the word “comprising” is to be understood to include the component, but does not exclude any other component.
  • “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
  • a liquid crystal display is a liquid crystal that applies an electric field between two glass substrates to display numbers or images.
  • the liquid crystal is composed of a substance between a liquid and a solid.
  • the picture is formed by controlling the light transmission of the liquid crystal display panel.
  • the liquid crystal is uniformly disposed in the liquid crystal display panel.
  • FIG. 1A is a schematic diagram of a display panel with adjustable zoom according to an embodiment of the present application.
  • the display panel includes: a first substrate 1 and a second substrate 2 disposed opposite each other, and a first substrate 1 and a second substrate 2 are included a liquid crystal layer 3, the liquid crystal layer 3 includes uniformly distributed liquid crystals; an image sensing module 22 disposed on a side of the second substrate 2 facing the first substrate 1; and a lens module 4 disposed in the array
  • the substrate 1 faces the side of the second substrate 2 and corresponds to the position of the image sensing module 22, and focuses the image light to the image sensing module 22;
  • the active switch array module 21 is disposed on the second substrate. 2 facing the first substrate 1 for driving the liquid crystal uniformly distributed in the liquid crystal layer 3; wherein the image sensing module 22 receives the image light after the lens module 4 is focused.
  • an opaque region 11 is further disposed between the first substrate 1 and the lens module 4, and the material used therein effectively blocks the penetration of visible light, and only allows the infrared light band to pass through. , as shown in Figure 1A.
  • the display panel shown in FIG. 1A includes a first substrate 1 , a second substrate 2 , a lens module 4 , an active switch array module 21 , and an image sensing module 22 .
  • a first substrate 1 is a color filter side substrate
  • the second substrate 2 is a TFT side substrate
  • a liquid crystal layer 3 is interposed between the first substrate 1 and the second substrate 2.
  • the image sensing module 22 is disposed in parallel with the active switch array module 21, and the array of the lens modules 4 disposed on the side of the first substrate 1 facing the second substrate 2 corresponds to the image sense.
  • the position of the module 22 is transmitted through the lens refraction effect of the lens module 4 to focus the image light onto the image sensing module 22.
  • a light-transmissive region 12 for displaying an image there is a light-transmissive region 12 for displaying an image, and on the left side thereof is an opaque region 11, and the material used for the opaque region 11 is only Allows light in a specific band (such as the infrared band) to pass through.
  • an opaque region 11 is further disposed between the first substrate 1 and the lens module 4, and the material used is effective to block the penetration of visible light, and only allows the infrared light band to pass through.
  • a single optical component has only a single focal length, and thus the effect of imaging the object is affected by the depth of field.
  • the present application adds a lens module 4 on the side of the opaque area 11 facing the second substrate 2, which can be combined with the image sensing module 22 located below it to form an adjustable zoom image sensing. Unit, which improves image quality without being limited by depth of field.
  • circuits for realizing the image sensing module 22 or even the functions of the CPU, the RAM, the Flash, the DSP, the compression encoding processor, and the image sensor may be separately formed on the array substrate.
  • the second substrate may be, but not limited to, a single crystal silicon substrate, a low temperature polycrystalline silicon substrate, a high temperature polycrystalline silicon substrate, or other substrate capable of satisfying a high mobility of the peripheral integrated circuit.
  • the lens module 4 of the present embodiment is fabricated by using a wafer level manufacturing technology, and has the advantage of being small in size, and does not cause bulky adverse effects on the whole system.
  • the material of the lens module 4 is selected from optical grades. Light transmissive material. That is, in one embodiment, the lens module 4 is fabricated using a wafer level manufacturing technique, and the lens module 4 may be made of optical grade glass, polymethyl methacrylate or carbonate resin.
  • another object of the present application is applicable to an image sensing display device, and the image sensing display device can be combined with the backlight module, for example, including a direct-lit or edge-lit backlight module.
  • the image sensing display panel is also included.
  • FIG. 1B is a schematic diagram of a path of image sensing converted to an electrical signal according to an embodiment of the present application.
  • the image sensing display panel structure of FIG. 1B includes a second substrate 2 and an active switch array module 21 and an image sensing module 22 thereon.
  • the image sensing module 22 is disposed on a side of the second substrate 2 facing the first substrate 1.
  • the image sensing module 22 has a light sensor 221 that can receive the image light after the lens module 4 is focused and converted into a current, and then the current flow.
  • the photoelectric switch 222 to the side forms an electrical signal, and then transmits the electrical signal to the active switch array module 21 to control the liquid crystal layer 3 to generate an image.
  • the active switch array module 21 has a gate switch 211 that can receive the electrical signal transmitted by the photoelectric switch 221, thereby controlling the power of the liquid crystal driving voltage.
  • the flow flows from the source electrode 213 to the drain electrode 214, and then to the pixel electrode 215 to form an electric field with the first substrate 1 in FIG. 1A to control the rotation of the liquid crystal molecules in the liquid crystal layer 3.
  • An insulating isolation layer 212 is disposed on the side of the gate electrode 211 facing the first substrate 1 , and an insulating protection layer 216 and a liquid crystal are disposed above the thin film transistor module 21 and the image sensing module 22 . isolation.
  • the image sensing module 22 includes a photo sensor 221, which may be a photodiode or a phototransistor, and the material thereof may be selected from a narrow band gap organic or inorganic material having a band gap of less than 1.12 eV.
  • a photodiode composed of a semiconductor material such as amorphous silicon, microcrystalline silicon, polycrystalline silicon or mercury cadmium telluride (HgCdTe).
  • FIG. 1C is a schematic diagram of a path of image sensing converted to an electrical signal according to another embodiment of the present application.
  • the first substrate 1 of the image sensing panel is provided with a light transmissive region 12 and an opaque region 11 that only allows light of a specific wavelength band to pass through as shown in FIG. 1A.
  • the image sensing display panel structure of FIG. 1C includes a first substrate 1 provided with a light transmissive region 12 (as shown in FIG. 1A) and an opaque region 11 that only allows the infrared light band to pass through, and a second substrate 2 and The active switch array module 21 and the image sensing module 22 thereon (as shown in FIG. 1B).
  • the image sensing module 22 is disposed on a side of the second substrate 2 facing the first substrate 1 corresponding to a lower area of the opaque region 11 , and the image sensing module 22 has infrared light that can receive the outside through the opaque region 11 .
  • the photosensor 221 is converted into a current, and then the current flows to the adjacent photoelectric switch 222 to form an electrical signal, and then the electrical signal is transmitted to the active switch array module 21 (as shown in FIG. 1B) to control the liquid crystal layer 3 to generate an image.
  • the photo sensor 221 may be a photodiode or a phototransistor, and the material thereof may be selected from a narrow band gap organic or inorganic material having an energy gap of less than 1.12 eV, such as amorphous silicon, microcrystalline silicon, polycrystalline silicon or It is a phototube composed of a semiconductor material such as mercury cadmium telluride (HgCdTe). Since the photosensor 221 of the present embodiment mainly absorbs infrared light to induce current, an opaque region 11 that allows only the infrared light band to pass through is disposed in this embodiment as shown in FIG. 1A. The arrangement of the light area 11 allows the image sensing module 22 to receive the image light that is focused by the lens module 4 after passing through the opaque area 11, and is not affected by external ambient light or the backlight, thereby affecting the sensitivity of the sensing.
  • a narrow band gap organic or inorganic material having an energy gap of less than 1.12 eV, such as amorphous silicon, microcrystalline silicon, polycrystalline silicon
  • the active switch array module 21 has a gate switch 211 that can receive the infrared signal received by the photoelectric switch 221 and convert and transmit the electrical signal, thereby controlling the liquid crystal driving voltage.
  • the current flows from the source electrode 213 to the drain electrode 214, and then to the pixel electrode 215 to form an electric field with the first substrate 1 to control the rotation of the liquid crystal molecules in the liquid crystal layer 3.
  • An electrically isolated insulating protective layer 212 is disposed on a side of the gate switch 211 facing the first substrate 1 , and is also disposed on a side of the thin film transistor module 21 and the image sensing module 22 facing the first substrate 1 .
  • An insulating protective layer 216 is isolated from the liquid crystal.
  • the application can realize the effect of the adjustable zooming in the TFT liquid crystal display panel by using the additional lens module and the image sensing module, which can be overcome by the depth of field and effectively overcome the aforementioned application problem of the device. Further, this device can be used. to fulfill Image recognition and vein sensing capabilities.
  • the lens module 4 is attached to the image sensing module 22 of the second substrate 2, as shown in FIG. 2A to FIG. 2C.
  • One side of the first substrate 1 and the image light is focused to the image sensing module 22 via the lens module 4.
  • the image sensing module 22 receives the light sensor 221 that converts the focused image light from the lens module 4 into a current, and then the current flows to the adjacent photoelectric switch 222 to form a electrical signal, and then transmits the electrical signal to the active switch array.
  • the module 21 controls the liquid crystal layer 3 to generate an image.
  • the active switch array module 21 has a gate switch 211 that can receive the electrical signal transmitted by the photoelectric switch 221, and then controls the current of the liquid crystal driving voltage from the source electrode 213 to the drain electrode 214, and then to the pixel electrode 215.
  • An electric field is formed with the first substrate 1 in FIG. 2A to control the rotation of the liquid crystal molecules in the liquid crystal layer 3.
  • An electrically isolated insulating protective layer 212 is disposed on a side of the gate switch 211 facing the first substrate 1 , and is also disposed on a side of the thin film transistor module 21 and the image sensing module 22 facing the first substrate 1 .
  • An insulating protective layer 216 is isolated from the liquid crystal.
  • an opaque region 11 is disposed between the first substrate 1 and the lens module 4 to filter and isolate light of a specific wavelength band.
  • the display panel The structure does not add the lens module 4 (as shown in FIG. 1A and FIG. 2A), but uses the change of the electric field to drive the liquid crystal 31 in the liquid crystal layer 3 to change the angle, thereby focusing the image light on the image sensing module 22.
  • a liquid crystal 31 can be filled between the first substrate 1 (color film substrate) and the second substrate 2 (active switch array substrate) by using a TFT-LCD (Thin Film Transistor Liquid Crystal Display) process, thereby forming a “planar” liquid crystal.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • the image sensing module 22 receives the light sensor 221 that converts the focused image light of the liquid crystal 31 into a current, and then the current flows to the adjacent photoelectric switch 222 to form a electrical signal, and then transmits the electrical signal to the active switch array module. 21 to control the liquid crystal layer 3 to generate an image.
  • the active switch array module 21 has a gate switch 211 that can receive the electrical signal transmitted by the photoelectric switch 221, and then controls the current of the liquid crystal driving voltage from the source electrode 213 to the drain electrode 214, and then to the pixel electrode 215.
  • An electric field is formed with the first substrate 1 in FIG. 3A to control the rotation of the liquid crystal molecules in the liquid crystal layer 3.
  • An insulating isolation layer 212 is disposed above the gate switch 211, and an insulating protection layer 216 is disposed on the side of the thin film transistor module 21 and the image sensing module 22 facing the first substrate 1 to isolate the liquid crystal.
  • an opaque region 11 is disposed between the first substrate 1 and the liquid crystal layer 3 to filter and isolate light of a specific wavelength band.
  • the liquid crystal lens has the following advantages: 1.
  • the existing lens can only realize the "zoom" visual effect by magnifying the part of the photo by digital technology, and the real optical zoom cannot be realized, and the liquid crystal lens
  • the arrangement direction of the liquid crystal molecules can be changed by changing the operating voltage, thereby realizing the effect of adjusting the physical focal length, and the thin and light characteristics are a great advantage, and an effective optical zoom effect can be achieved in a small space;
  • Existing lenses are all Highlighting the obvious lens lens is not conducive to the monitoring and protection of secret information, and The surface of the "planar" liquid crystal lens formed by the characteristics of liquid crystal molecules does not appear to be indistinguishable from the liquid crystal panel, and has a strong concealing property.
  • a display device includes: a direct-lit or edge-lit backlight module; a control component; and a display panel described in each embodiment.
  • the display device may be TN (Twisted Nematic), STN (Super Twisted Nematic), OCB (Optically Compensated Birefringence), VA (Vertical Alignment) A type or curved type liquid crystal display device, but is not limited thereto.
  • the related lens is formed on the substrate of the display panel (such as a lens module) or distributed on the internal liquid crystal layer (such as a liquid crystal lens), without occupying the outer frame area of the display panel, and the same, "flat type" "The lens can be physically zoomed for enhanced image capture.

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Abstract

一种显示面板及应用的显示装置，此显示面板包括：一第一基板（1）；一第二基板（2）；液晶层（3），设置于第一基板（1）与第二基板（2）之间；影像感测模块（22），配置于第二基板（2）面向第一基板（1）的一侧；透镜模块（4），阵列配置于第一基板（1）面向第二基板（2）的一侧，并对应于影像感测模块（22）的位置；以及主动开关阵列模块（21），配置于第二基板（2）面向第一基板（1）的一侧；其中影像感测模块（22）接收透镜模块（4）聚焦后的影像光线。

Description

显示面板及应用的显示装置 技术领域
本申请涉及一种显示面板及应用的显示装置，特别是涉及一种不受景深影响、具有可调变焦距的显示面板及应用的显示装置。
背景技术
景深(Depth of field)是指影像感测装置对焦点前后相对清晰的成像范围。在光学中，尤其是录像或是摄影，是一个描述在空间中，可以清楚成像的距离范围。一般透镜只能够将光聚到某一固定的距离，远离此点则会逐渐模糊，但是在某一段特定的距离内，影像模糊的程度是肉眼无法察觉的，这段距离称为景深。若要移除景深的限制，影像感测组件就需要具备可调变焦距的功能。
现有的液晶显示面板工艺领域，有人将影像感测模块(image sensor)与显示面板结合组成多功能显示器，达到可兼具影像扫瞄与显示的目的，影像扫瞄功能如电脑相机、电脑眼等，作为一种视频输入设备被广泛的运用于视频会议、远程医疗及实时监控等方面。近年来，随着互联网技术的发展，网络速度的不断提高，再加上感光成像器件技术的成熟并大量用于视频输入设备的制造上，通信双方彼此可以通过视频输入设备在网络进行有影像、有声音的交谈和沟通，另外，人们还可以将其用于当前各种流行的数码影像、影音处理，在人们的生活和工作中发挥越来越重要的作用。然而所使用的影像感测模块有一固定的焦距范围，所以其成像效果会受到景深的影响而表现不佳。
此外传统的玻璃或是塑料透镜也只有单一焦距，并无调变焦距的功能。若要改为变焦镜群组，顾名思义需要两片以上传统透镜组合，并且搭配音圈马达或是压电致动器，使镜群组中的透镜相对距离改变，以调变镜群组等效的焦距，然而音圈马达本身的体积使得传统自动对焦模块会有体积过大的困扰，造成应用上的困难。
发明内容
为了解决上述技术问题，本申请的目的在于提供一种显示面板及应用的显示装置，特别是涉及一种不受景深影响、具有可调变焦距的显示面板及应用的显示装置，使其符合目前多数装置轻薄短小的特征，大幅提升其使用性。
本申请解决其技术问题是采用一种可调变焦距的影像感测模块(Image Sensor)与透镜模块(Lens Array)结合在薄膜晶体管液晶面板(TFT LCD)中组合应用，利用透镜的成像原理结合影像感测模块和TFT面板来使物体成像或影像扫描时不受景深所限制，能达到可调变焦距的效果，以克服现有技术的问题。本申请所使用的透镜模块为利用晶圆级的制造技术所制作，因此不会有体积过大的问 题，便于轻薄短小的可携式产品加以应用。
本申请的目的及解决其技术问题还可采用以下技术措施进一步实现。
本申请提供了一种显示面板，包括：一第一基板；一第二基板；液晶层，设置于所述第一基板与所述第二基板之间；影像感测模块，配置于所述第二基板面向所述第一基板的一侧；透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧，并对应于所述影像感测模块的位置，将影像光线聚焦到所述影像感测模块；以及主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧，用以驱动均匀分布于液晶层中的液晶；其中所述影像感测模块接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
在本申请的一实施例中，所述影像感测模块与所述主动开关阵列模块平行设置。
在本申请的一实施例中，所述影像感测模块包含光传感器，所述光传感器为光二极管或光敏晶体管。
在本申请的一实施例中，所述光传感器材质为能隙小于1.12eV窄禁带的有机或无机材料。
在本申请的一实施例中，所述光传感器材质为能隙小于1.12eV窄禁带的非晶硅、微晶硅、多晶硅或是碲镉汞的半导体材料。
在本申请的一实施例中，所述透镜模块为利用晶圆级的制造技术所制作。
在本申请的一实施例中，所述透镜模块的材质为光学等级的玻璃、聚甲基丙烯酸甲酯或者碳酸酯树脂。
在本申请的一实施例中，所述第一基板与所述透镜模块之间还设置有一不透光区，其所使用的材质有效阻挡可见光的穿透，仅容许红外光波段穿越。
本申请的目的及解决其技术问题还可采用以下技术措施进一步实现。
本申请的另一目的一种影像感测显示装置，包括：直下式或侧光式的背光模块；控制部件；及显示面板，包括：一第一基板；一第二基板；液晶层，设置于所述第一基板与所述第二基板之间；影像感测模块，配置于所述第二基板面向所述第一基板的一侧；透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧，并对应于所述影像感测模块的位置，将影像光线聚焦到所述影像感测模块；以及主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧，用以驱动均匀分布于液晶层中的液晶；其中所述影像感测模块接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
在本申请的一实施例中，所述影像感测模块与所述主动开关阵列模块平行设置。
在本申请的一实施例中，所述影像感测模块包含光传感器。
在本申请的一实施例中，所述光传感器为光二极管。
在本申请的一实施例中，所述光传感器为光敏晶体管。
在本申请的一实施例中，所述光传感器材质为能隙小于1.12eV窄禁带的有机或无机材料。
在本申请的一实施例中，所述透镜模块为利用晶圆级的制造技术所制作。
在本申请的一实施例中，所述透镜模块的材质为光学等级的玻璃。
在本申请的一实施例中，所述透镜模块的材质为聚甲基丙烯酸甲酯。
在本申请的一实施例中，所述透镜模块的材质为碳酸酯树脂。
在本申请的一实施例中，所述第一基板与所述透镜模块之间还设置有一不透光区，用于使红外光波段穿越。
本申请提供了另一种显示面板，包括：一第一基板；一第二基板；液晶层，设置于所述第一基板与所述第二基板之间；影像感测模块，配置于所述第二基板面向所述第一基板的一侧，所述影像感测模块包含有光传感器；透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧并对应于所述影像感测模块的位置，用以将影像光线聚焦到所述影像感测模块，所述透镜模块以光学等级的材质，且利用晶圆级的制造技术所制作；以及主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧，并与所述影像感测模块平行设置；其中，所述第一基板与所述透镜模块之间还设置有一仅可使红外光波段穿越的不透光区，所述影像感测模块用以接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
经过本申请的改进之后，在TFT液晶显示面板内部利用增设透镜模块结合影像感测模块来达成可调变焦聚的效果，可不受景深所限制，有效克服了前述的装置应用问题，进一步而言，此一装置可用来实现影像辨识与静脉感测的功能。
附图说明
图1A是本申请一实施例可调变焦距的显示面板的示意图。
图1B是本申请一实施例影像感测转换为电讯号的路径示意图。
图1C是本申请另一实施例影像感测转换为电讯号的路径示意图。
图2A是本申请另一实施例可调变焦距的显示面板的示意图。
图2B是本申请另一实施例影像感测转换为电讯号的路径示意图。
图2C是本申请又一实施例影像感测转换为电讯号的路径示意图。
图3A是本申请又一实施例可调变焦距的显示面板的示意图。
图3B是本申请又一实施例影像感测转换为电讯号的路径示意图。
图3C是本申请又一实施例影像感测转换为电讯号的路径示意图。
具体实施方式
以下各实施例的说明是参考附加的图式，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。
附图和说明被认为在本质上是示出性的，而不是限制性的。在图中，结构相似的单元是以相同标号表示。另外，为了理解和便于描述，附图中示出的每个组件的尺寸和厚度是任意示出的，但是本申请不限于此。
在附图中，为了清晰起见，夸大了层、膜、面板、区域等的厚度。在附图中，为了理解和便于描述，夸大了一些层和区域的厚度。将理解的是，当例如层、膜、区域或基底的组件被称作“在”另一组件“上”时，所述组件可以直接在所述另一组件上，或者也可以存在中间组件。
另外，在说明书中，除非明确地描述为相反的，否则词语“包括”将被理解为意指包括所述组件，但是不排除任何其它组件。此外，在说明书中，“在......上”意指位于目标组件上方或者下方，而不意指必须位于基于重力方向的顶部上。
为更进一步阐述本申请为达成预定申请目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本申请提出的一种显示面板及应用的显示装置，其具体实施方式、结构、特征及其功效，详细说明如后。
液晶显示器(Liquid Crystal Display，LCD)为施加一电场于两片玻璃基板之间的液晶，以显示数字或影像。其中液晶由介于液体与固体之间的物质所组成。画面则通过控制液晶显示面板的光线传送来形成。其中液晶均匀地设置于液晶显示面板中。
图1A为本申请一实施例可调变焦距的显示面板的示意图。请参照图1A，在本申请的一实施例中，所述显示面板，包括：第一基板1与第二基板2，上下相对设置，所述第一基板1与第二基板2之间包含有一液晶层3，所述液晶层3包含有均匀分布的液晶；影像感测模块22，配置于所述第二基板2面向第一基板1的一侧；透镜模块4，阵列配置于所述第一基板1面向第二基板2的一侧，并对应于所述影像感测模块22的位置，将影像光线聚焦到所述影像感测模块22；主动开关阵列模块21，配置于所述第二基板2面向第一基板1的一侧，用以驱动均匀分布于液晶层3中的液晶；其中所述影像感测模块22接收透镜模块4聚焦后的影像光线。
在本申请的一实施例中，所述第一基板1与所述透镜模块4之间还设置有一不透光区11，其所使用的材质有效阻挡可见光的穿透，仅容许红外光波段穿越，如图1A所示。
图1A所示的显示面板，内部包含有第一基板1、第二基板2、透镜模块4、主动开关阵列模块21与影像感测模块22。为了便于解释，在图1中仅示出了单一主动开关阵列模块21与单一影像感测模块22，但此并非限定主动开关阵列模块21与一个影像感测模块22仅能个别拥有单一组件。 其中，第一基板1即为彩色滤光片侧基板，第二基板2即为TFT侧基板，而于第一基板1及第二基板2间则夹设一层液晶层3。
于上述的实施例中，所述影像感测模块22与主动开关阵列模块21平行设置，且透镜模块4阵列配置于所述第一基板1面向第二基板2的一侧对应于所述影像感测模块22的位置，透过透镜模块4的透镜折射效果，可将影像光线聚焦到所述影像感测模块22。
并且，在第一基板1面向第二基板2的一侧中央具有用来显示影像的透光区12，在其左侧则是一不透光区11，不透光区11所使用的材质仅容许特定波段的光线(如红外光波段)穿越。例如，在一实施例中，所述第一基板1与所述透镜模块4之间还设置有一不透光区11，其所使用的材质有效阻挡可见光的穿透，仅容许红外光波段穿越。
在前述的待解决问题曾提及单一光学组件仅有单一焦距，因此其物体成像的效果会受到景深的影响。为了克服此一缺陷，本申请在不透光区11面向第二基板2的一侧增设一透镜模块4，可与位于其下方的影像感测模块22结合成一种可调变焦聚的影像感测单元，如此便可改善成像质量而不受景深的限制。另外，具体实施时，也可以在阵列基板上分别形成实现影像感测模块22甚或CPU、RAM、Flash、DSP、压缩编码处理器以及图像传感器功能的电路。需要说明的是，当在第二基板上直接形成实现上述功能的电路时，可以通过掩膜版的曝光、显影等光刻工艺与液晶面板的阵列基板制作同步完成。其中，上述第二基板可以但不限于为单晶硅基板、低温多晶硅基板、高温多晶硅基板或者其它能够满足周边集成电路具有较高迁移率的基板。
本实施例的透镜模组4是利用晶圆级的制造技术所制作，具有体积小型的优势，不会对***整体造成体积庞大的不良影响，透镜模块4的材质则是选自光学等级的可透光材质。亦即，在一实施例中，所述透镜模块4利用晶圆级的制造技术所制作，所述透镜模块4的材质可为光学等级的玻璃、聚甲基丙烯酸甲酯或者碳酸酯树脂。
此外，本申请的另一目的可应用于一种影像感测显示装置，所述影像感测显示装置的结构可将上述面板与背光模块相结合，例如包括：直下式或侧光式的背光模块，还包括所述的影像感测显示面板。
进一步请继续参阅图1B，图1B为本申请一实施例影像感测转换为电讯号的路径示意图。图1B的影像感测显示面板结构包括有第二基板2以及在其上的主动开关阵列模块21与影像感测模块22。所述影像感测模块22设置于第二基板2面向第一基板1的一侧，影像感测模块22具有可接收透镜模块4聚焦后的影像光线而转换成电流的光传感器221，然后电流流至旁边的光电开关222形成电讯号，再将电讯号传送给主动开关阵列模块21以控制液晶层3产生影像。所述主动开关阵列模块21具有闸极开关211可接收由所述光电开关221传送的电讯号，进而控制液晶驱动电压的电 流由源极电极213流至漏极电极214，再传送至画素电极215与图1A中的第一基板1形成电场来控制液晶层3中的液晶分子转动。其中，闸极开关211面向第一基板1的一侧设置有一层电隔离的绝缘保护层212，并且在所述薄膜晶体管模块21与影像感测模块22的上方亦配置有一绝缘保护层216与液晶隔离。
在此一实施例中，所述影像感测模块22包含光传感器221，所述光传感器221可为光二极管或光敏晶体管，其材质可选自能隙小于1.12eV的窄禁带有机或无机材料，例如非晶硅、微晶硅、多晶硅或是碲镉汞(HgCdTe)之类的半导体材料所构成的光极管。
续请参阅图1C，图1C是本申请另一实施例影像感测转换为电讯号的路径示意图。于图1C的实施例中，所述影像感测面板的第一基板1如图1A所示设置有透光区12与仅容许特定波段的光线穿越的不透光区11。
图1C的影像感测显示面板结构包括有设置有透光区12(如图1A所示)与仅容许红外光波段穿越的不透光区11的第一基板1，以及第二基板2和在其上的主动开关阵列模块21与影像感测模块22(如图1B所示)。所述影像感测模块22设置于第二基板2面向第一基板1的一侧对应于不透光区11的下方区域，影像感测模块22具有可接收外界穿越不透光区11的红外光而转换成电流的光传感器221，然后电流流至旁边的光电开关222形成电讯号，再将电讯号传送给主动开关阵列模块21(如图1B所示)以控制液晶层3产生影像。
在上述的实施例中，所述光传感器221可为光二极管或光敏晶体管，其材质可选自能隙小于1.12eV的窄禁带有机或无机材料，例如非晶硅、微晶硅、多晶硅或是碲镉汞(HgCdTe)之类的半导体材料所构成的光极管。由于本实施例的光传感器221主要是吸收红外光来感应电流，因此于此一实施例中设置了如图1A所示的仅容许红外光波段穿越的不透光区11，基于所述不透光区11的设置，可使影像感测模块22接收通过不透光区11后经透镜模块4聚焦的影像光线，不会受到外界环境光线或背光源的干扰而影响其感测的灵敏度。
因此如图1C所示，在上述的实施例中，所述主动开关阵列模块21具有闸极开关211可接收由所述光电开关221接收红外光而转换传送的电讯号，进而控制液晶驱动电压的电流由源极电极213流至漏极电极214，再传送至画素电极215与所述第一基板1形成电场来控制液晶层3中的液晶分子转动。其中，闸极开关211面向第一基板1的一侧设置有一层电隔离的绝缘保护层212，并且在所述薄膜晶体管模块21与影像感测模块22的面向第一基板1的一侧亦配置有一绝缘保护层216与液晶隔离。
本申请可以在TFT液晶显示面板内部利用增设透镜模块结合影像感测模块来达成可调变焦聚的效果，可不受景深所限制，有效克服了前述的装置应用问题，进一步而言，此一装置可用来实现 影像辨识与静脉感测的功能。
而增设透镜模块结合影像感测模块来达成可调变焦聚的效果亦可如图2A至图2C所示，将所述透镜模块4装设于所述第二基板2的影像感测模块22面向第一基板1的一侧，并经由透镜模块4将影像光线聚焦至影像感测模块22。如图2B所示，影像感测模块22接收透镜模块4聚焦后的影像光线转换成电流的光传感器221，然后电流流至旁边的光电开关222形成电讯号，再将电讯号传送给主动开关阵列模块21以控制液晶层3产生影像。所述主动开关阵列模块21具有闸极开关211可接收由所述光电开关221传送的电讯号，进而控制液晶驱动电压的电流由源极电极213流至漏极电极214，再传送至画素电极215与图2A中的第一基板1形成电场来控制液晶层3中的液晶分子转动。其中，闸极开关211面向第一基板1的一侧设置有一层电隔离的绝缘保护层212，并且在所述薄膜晶体管模块21与影像感测模块22的面向第一基板1的一侧亦配置有一绝缘保护层216与液晶隔离。在图2C中，则是于第一基板1与透镜模块4间设置一不透光区11，可对特定波段的光线进行筛选与隔离。
又或者可如图3A至图3C所示，利用液晶分子中间厚边缘薄的型态，透过电场的改变驱动使液晶可达到转换角度使可变焦的效果，于此一实施例中，显示面板的结构不增设透镜模块4(如图1A与图2A所示)，而是利用电场的变化驱动液晶层3中的液晶31变换角度，进而将影像光线聚焦于影像感测模块22。具体的，可以采用TFT-IXD(薄膜晶体管液晶显示器)工艺在第一基板1(彩膜基板)和第二基板2(主动开关阵列基板)之间填充液晶31，即可形成“平面型”液晶透镜，其可以利用液晶31分子双折射特性以及随电场分布变化排列特性而让光束聚焦或者发散，从而实现现有透镜(塑料或者玻璃的透镜镜头)的功能。如图3B所示，影像感测模块22接收液晶31聚焦后的影像光线转换成电流的光传感器221，然后电流流至旁边的光电开关222形成电讯号，再将电讯号传送给主动开关阵列模块21以控制液晶层3产生影像。所述主动开关阵列模块21具有闸极开关211可接收由所述光电开关221传送的电讯号，进而控制液晶驱动电压的电流由源极电极213流至漏极电极214，再传送至画素电极215与图3A中的第一基板1形成电场来控制液晶层3中的液晶分子转动。其中，闸极开关211上方设置有一层电隔离的绝缘保护层212，并且在所述薄膜晶体管模块21与影像感测模块22面向第一基板1的一侧亦配置有一绝缘保护层216与液晶隔离。在图3C中，则是于第一基板1与液晶层3间设置一不透光区11，可对特定波段的光线进行筛选与隔离。液晶透镜与现有的透镜相比，其还具有以下优势：1.现有的透镜只能通过数字技术放大照片的局部而实现“变焦”的视觉效果，无法实现真正的光学变焦，而液晶透镜可以通过改变操作电压来改变液晶分子的排列方向，进而实现调节物理焦距的效果，其轻薄特性更是一大优点，可以在小空间内达到有效的光学变焦效果；2.现有的透镜均为突出明显的透镜镜头，不利于秘密信息的监控保护，而利 用液晶分子特性形成的“平面型”液晶透镜表面看起来与液晶面板毫无差异，具有较强的隐蔽性。
请同时参考图1A至图3C，在一实施例中，一种显示装置，包括：直下式或侧光式的背光模块；控制部件；还包括各实施例中所述的显示面板。其中，该显示装置可以为用TN(扭曲向列，Twisted Nematic)、STN(超扭曲向列，Super Twisted Nematic)、OCB(光学补偿弯曲排列，Optically Compensated Birefringence)、VA(垂直配向，Vertical Alignment)型、曲面型液晶显示器件，但并不限于此。本申请实施例中，将相关的透镜形成、粘贴于显示面板的基板上(如透镜模块)或分布于内部液晶层(如液晶透镜)，无需占用显示面板外边框面积，同吋，“平面型”透镜可进行物理变焦，具有更强的图像捕捉能力。
“在一些实施例中”及“在各种实施例中”等用语被重复地使用。该用语通常不是指相同的实施例；但它亦可以是指相同的实施例。“包含”、“具有”及“包括”等用词是同义词，除非其前后文意显示出其它意思。
以上所述，仅是本申请的较佳实施例而已，并非对本申请作任何形式上的限制，虽然本申请已以较佳实施例揭露如上，然而并非用以限定本申请，任何熟悉本专业的技术人员，在不脱离本申请技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本申请技术方案的内容，依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本申请技术方案的范围内。

Claims (20)

  1. 一种显示面板，包括：
    一第一基板；
    一第二基板；
    液晶层，设置于所述第一基板与所述第二基板之间；
    影像感测模块，配置于所述第二基板面向所述第一基板的一侧；
    透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧并对应于所述影像感测模块的位置，用以将影像光线聚焦到所述影像感测模块；以及
    主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧；
    其中所述影像感测模块用以接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
  2. 如权利要求1所述的显示面板，其中，所述影像感测模块与所述主动开关阵列模块平行设置。
  3. 如权利要求1所述的显示面板，其中，所述影像感测模块包含光传感器。
  4. 如权利要求3所述的显示面板，其中，所述光传感器为光二极管或光敏晶体管。
  5. 如权利要求3所述的显示面板，其中，所述光传感器材质为能隙小于1.12eV窄禁带的有机或无机材料。
  6. 如权利要求1所述的显示面板，其中，所述透镜模块为利用晶圆级的制造技术所制作。
  7. 如权利要求6所述的显示面板，其中，所述透镜模块的材质为光学等级的玻璃、聚甲基丙烯酸甲酯或者碳酸酯树脂。
  8. 如权利要求1所述的显示面板，其中，所述第一基板与所述透镜模块之间还设置有一不透光区，用于使红外光波段穿越。
  9. 一种显示装置，包括：
    背光模块；
    控制部件；及
    显示面板，包括：
    一第一基板；
    一第二基板；
    液晶层，设置于所述第一基板与所述第二基板之间；
    影像感测模块，配置于所述第二基板面向所述第一基板的一侧；
    透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧并对应于所述影像感测模块的位置，用以将影像光线聚焦到所述影像感测模块；以及
    主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧；
    其中所述影像感测模块用以接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
  10. 如权利要求9所述的显示装置，其中，所述影像感测模块与所述主动开关阵列模块平行设置。
  11. 如权利要求9所述的显示装置，其中，所述影像感测模块包含光传感器。
  12. 如权利要求11所述的显示装置，其中，所述光传感器为光二极管。
  13. 如权利要求11所述的显示装置，其中，所述光传感器为光敏晶体管。
  14. 如权利要求11所述的显示装置，其中，所述光传感器材质为能隙小于1.12eV窄禁带的有机或无机材料。
  15. 如权利要求9所述的显示装置，其中，所述透镜模块为利用晶圆级的制造技术所制作。
  16. 如权利要求15所述的显示装置，其中，所述透镜模块的材质为光学等级的玻璃。
  17. 如权利要求15所述的显示装置，其中，所述透镜模块的材质为聚甲基丙烯酸甲酯。
  18. 如权利要求15所述的显示装置，其中，所述透镜模块的材质为碳酸酯树脂。
  19. 如权利要求9所述的显示装置，其中，所述第一基板与所述透镜模块之间还设置有一不透光区，用于使红外光波段穿越。
  20. 一种显示面板，包括：
    一第一基板；
    一第二基板；
    液晶层，设置于所述第一基板与所述第二基板之间；
    影像感测模块，配置于所述第二基板面向所述第一基板的一侧，所述影像感测模块包含有光传感器；
    透镜模块，阵列配置于所述第一基板面向所述第二基板的一侧并对应于所述影像感测模块的位置，用以将影像光线聚焦到所述影像感测模块，所述透镜模块以光学等级的材质，且利用晶圆级的制造技术所制作；以及
    主动开关阵列模块，配置于所述第二基板面向所述第一基板的一侧，并与所述影像感测模块平行设置；
    其中，所述第一基板与所述透镜模块之间还设置有一仅可使红外光波段穿越的不透光区，所述影像感测模块用以接收所述透镜模块聚焦后的影像光线并调变所述影像感测模块的焦距。
PCT/CN2017/097882 2017-07-07 2017-08-17 显示面板及应用的显示装置 WO2019006828A1 (zh)

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