CN212255968U - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN212255968U CN212255968U CN202021051671.8U CN202021051671U CN212255968U CN 212255968 U CN212255968 U CN 212255968U CN 202021051671 U CN202021051671 U CN 202021051671U CN 212255968 U CN212255968 U CN 212255968U
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Abstract
The utility model relates to a liquid crystal display device technical field discloses a liquid crystal display panel and liquid crystal display device, this liquid crystal display device includes this liquid crystal display panel, this liquid crystal display panel is including setting gradually the various membrane base plate in the light-emitting side of backlight layer, liquid crystal layer and array substrate, wherein, various membrane base plate is provided with first public electrode layer, array substrate is provided with pixel electrode and keeps away from the second public electrode layer of liquid crystal layer than pixel electrode, apply voltage between first public electrode layer and the pixel electrode layer, the control shows the visual angle, the multiplexing touch sensor that is of second public electrode layer. The utility model provides a liquid crystal display panel and liquid crystal display device will control the pixel electrode and the first public electrode layer of demonstration and all set up in the one side of the public electrode layer of second towards the backlight layer, have avoidd the electromagnetic shield effect to the public electrode layer of second, have realized the design of TDDI + HVA framework high-efficiently.
Description
Technical Field
The utility model relates to a liquid crystal display device technical field, in particular to liquid crystal display panel and liquid crystal display device.
Background
With the progress of social economy and science and technology, the liquid crystal display device has been widely used, and has different user requirements, and the user has different visual requirements for sharing data and confidentiality data, and the display device with a single visual angle mode can not meet the requirements of the user. Therefore, a need for switching between a wide viewing angle and a narrow viewing angle, that is, an HVA (hybrid view angle) is required for the liquid crystal display panel and the liquid crystal display device, and meanwhile, the liquid crystal display panel needs to ensure a touch function.
Referring to fig. 1 and 2, a conventional liquid crystal display panel 100 includes an array substrate 120 and a color filter substrate 110 that are oppositely disposed, and a liquid crystal layer 130 located between the array substrate 120 and the color filter substrate 110, wherein a surface of the color filter substrate 110 is a front surface of the liquid crystal display panel 100 facing a user, i.e., a light-emitting side. In addition, a backlight is generally disposed on the back side of the liquid crystal display panel 100 (i.e., the side of the array substrate 120 away from the liquid crystal layer 130).
A TFT (Thin Film Transistor) and a pixel electrode 122 are disposed in the array substrate 120, a first common electrode layer 111 is disposed in the color Film substrate 110, the TFT controls a voltage on the corresponding pixel electrode 122, and the voltage on the first common electrode layer 111 is also controlled correspondingly, an electric field is formed between the pixel electrode 122 and the first common electrode layer 111, the electric field controls liquid crystal molecules in the liquid crystal layer 130 to deflect, a light-transmitting path is formed at a corresponding position, so that backlight light transmits through the corresponding position of the liquid crystal layer 130, and a color picture is displayed through the color Film substrate 110.
For TDDI (Touch and Display Driver Integration) technology, the array substrate 120 is further provided with second common electrode layers 121, the number of the second common electrode layers is related to the Touch accuracy of the liquid crystal Display panel, and when there is a Touch action on the front surface of the liquid crystal Display panel 100, the second common electrode layers 121 at the positions corresponding to Touch points generate a response and feed back position information to the control chip, so that a Touch operation can be realized.
Wherein, the first common electrode layer 111 is disposed between the second common electrode layer 121 and the front surface of the liquid crystal display panel 100, the first common electrode layer 111 generates an electromagnetic shielding effect on the second common electrode layer 121, which affects the sensing effect of the second common electrode layer 121 as a touch sensor, so that the prior art performs an opening process on the first common electrode layer 111, an opening 112 is formed on the first common electrode layer 111, the opening 112 may cause an electric field between the pixel electrode 122 and the first common electrode layer 111 to be non-uniform, thereby affecting the angle of deflection of the liquid crystal molecules in the liquid crystal layer 130, affecting the display effect of the liquid crystal display panel 100, and the first common electrode layer 111 is opened only to reduce the shielding effect on the second common electrode layer 121, the shielding effect on the second common electrode layer 121 cannot be eliminated, the touch effect is not good, and the implementation effect of the TDDI + HVA architecture is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a liquid crystal display panel and a liquid crystal display device, so as to efficiently realize the design of TDDI + HVA architecture.
According to an aspect of the present invention, there is provided a liquid crystal display panel located on a light-emitting side of a backlight layer of a liquid crystal display device, the liquid crystal display panel including:
the color film substrate, the liquid crystal layer and the array substrate are sequentially arranged on the light emergent side of the backlight layer, wherein the color film substrate comprises a first common electrode layer, the array substrate comprises a pixel electrode and a second common electrode layer, and the pixel electrode is closer to the liquid crystal layer than the second common electrode layer.
Optionally, the color filter substrate further includes:
the color resistance layer is closer to the liquid crystal layer than the reflection polarizer layer, and the color resistance layer is arranged on one side, close to the backlight layer, of the first common electrode layer.
Optionally, the array substrate further includes:
the pixel layer is arranged on one side, far away from the liquid crystal layer, of the second common electrode layer;
and the first black matrix is arranged between adjacent sub-pixel units in the pixel layer.
Optionally, the color filter substrate includes a color resist layer, the color resist layer includes a second black matrix, and the second black matrix is disposed between adjacent color resists of the color resist layer.
Optionally, the array substrate further includes:
and the insulating layer is arranged between the pixel electrode and the second common electrode layer.
Optionally, the color filter substrate further includes:
and a planarization layer disposed between the first common electrode layer and the liquid crystal layer.
Optionally, an electrode material of the first common electrode layer is ITO.
Optionally, the liquid crystal of the liquid crystal layer is normal liquid crystal.
Optionally, the second common electrode layer includes a plurality of common electrode blocks, and the second common electrode layer is time-division multiplexed as a touch electrode layer.
The utility model provides a liquid crystal display panel is including setting gradually various membrane base plate, liquid crystal layer and the array substrate in the light-emitting side of liquid crystal display device's backlight layer, wherein, various membrane base plate includes first public electrode layer, the array substrate includes pixel electrode and comparison pixel electrode keeps away from the second public electrode layer of liquid crystal layer, liquid crystal display panel's touch-control information respond to the state of second public electrode layer, the liquid crystal molecules of liquid crystal layer deflect respond to first public electrode layer with voltage difference between the pixel electrode. The second common electrode layer is used as a touch sensor, the first common electrode layer and the pixel electrode are both located on the same side of the second common electrode layer, the other side of the second common electrode layer is a touch sensing side, the second common electrode layer is not influenced by electromagnetic shielding, the touch effect is guaranteed, meanwhile, the deflection of liquid crystal molecules of a liquid crystal layer between the first common electrode layer and the pixel electrode can be controlled by applying voltage between the first common electrode layer and the pixel electrode, the switching of wide and narrow visual angles is achieved, and the design of a TDDI + HVA framework is efficiently achieved.
According to the utility model discloses an on the other hand provides a liquid crystal display device, include the utility model provides a liquid crystal display panel and backlight, liquid crystal display panel is located the light-emitting side of backlight.
The utility model provides a liquid crystal display device includes above-mentioned liquid crystal display panel, can realize the design of TDDI + HVA framework high-efficiently, the touch-control of the liquid crystal display device who improves and the integrated effect of display driver, can realize simultaneously with HVA's compatibility, improved liquid crystal display device's touch-control and demonstration performance.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 illustrates a partial structural schematic view of a liquid crystal display panel according to the related art;
FIG. 2 is a schematic view showing a liquid crystal bias electric field of a liquid crystal display panel according to the related art;
fig. 3 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a partial structure of a liquid crystal display panel according to an embodiment of the present invention.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples.
Fig. 3 shows a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention, and fig. 4 shows a schematic structural diagram of a part of a liquid crystal display panel according to an embodiment of the present invention. Referring to fig. 3 and 4, the liquid crystal display panel 200 of the embodiment of the present invention includes a color film substrate 210 and an array substrate 220 which are arranged relatively, and a liquid crystal layer 230 disposed between the color film substrate 210 and the array substrate 220, one side of the color film substrate 210, which is away from the liquid crystal layer 230, is provided with a backlight layer 250, the backlight layer 250 provides a light source that is backlit, and the light source is converted into a color light source through the color film substrate 210 in sequence, and selects a light transmission through the liquid crystal layer 230, and outputs a display picture through the array substrate 220, that is, the color film substrate 210, the liquid crystal layer 230, and the array substrate 220.
The color filter substrate 210 includes a first common electrode layer 211, a planarization layer 212, a color resist layer 213, and a reflective polarizer layer 214.
The first common electrode layer 211 is adjacent to the liquid crystal layer 230 to provide a potential reference platform for an electric field for the liquid crystal molecules 231 of the liquid crystal layer 230 to deflect. The material of the first common electrode layer 211 may be ITO (Indium Tin Oxide).
The planarization layer 212 is disposed between the liquid crystal layer 230 and the first common electrode layer 211 to ensure flatness of the corresponding interface between the liquid crystal layer 230 and the first common electrode layer 211, and to ensure uniformity of an electric field, thereby ensuring uniformity of deflection of liquid crystal molecules 231 of the liquid crystal layer 230, and ensuring work efficiency of the liquid crystal layer 230.
The color resistance layer 213 is disposed on a side of the first common electrode layer 211 away from the liquid crystal layer 230, and the color resistance layer 213 includes RGB color resistors to convert a white light source passing through the color resistance layer 213 into three primary colors of red, green, and blue.
The reflective polarizer layer 214 is disposed on a side of the color barrier layer 213 away from the liquid crystal layer 230, and includes a reflective polarizer, which can reflect the external light incident from the front of the liquid crystal display panel 200 back to the color barrier layer 213, while the backlight transmits, and can use the external light source and the backlight as the display light source together, thereby improving the axial brightness of the display, reducing the light source brightness of the backlight, and reducing the system energy consumption. When the liquid crystal display panel displays at a narrow viewing angle, the arrangement of the reflection polarizer layer can effectively ensure the display brightness and the display effect.
The array substrate 220 includes a substrate 221, and a pixel layer 222, a second common electrode layer 224, an insulating layer 225, and a pixel electrode 226 are sequentially disposed on a side of the substrate 221 facing the liquid crystal layer 230.
The voltage of the pixel electrode 226 is controlled by the corresponding TFT of the pixel layer 222 to provide another potential platform, so that a potential difference is formed between the pixel electrode 226 and the potential platform of the first common electrode layer 211, and thus an electric field 31 passing through the liquid crystal layer 230 is formed between the pixel electrode 226 and the first common electrode layer 211, no opening is formed on the first common electrode layer 211, and the formed electric field 31 is vertically uniform.
The insulating layer 225 is disposed between the pixel electrode 226 and the second common electrode layer 224, and ensures electrical independence between the pixel electrode 226 and the second common electrode layer 224 serving as a touch sensor, thereby ensuring respective electrical properties. Meanwhile, the insulating layer 225 can also improve the overall flatness of the pixel electrode 226, and ensure the verticality of the electric field between the pixel electrode 226 and the first common electrode layer 211.
The first black matrix 223 is disposed on the surface of the pixel layer 222 contacting the substrate 221, the sub-pixel units of the pixel layer 222 correspond to the TFTs one by one, and the TFTs control whether the light path is turned on or off, and the first black matrix 223 is disposed between the adjacent sub-pixel units to isolate the light interference between the adjacent sub-pixel units, thereby preventing the light leakage caused by the gaps between the sub-pixel units from affecting the image display effect of the liquid crystal display panel. One sub-pixel unit corresponds to one color resistor of the color resistor layer 213, and one color resistor corresponds to one color of red, green and blue, and the color of the output light of the corresponding sub-pixel unit is controlled by controlling whether the sub-pixel unit is transparent or not.
In this embodiment, the first black matrix 223 is disposed between the sub-pixel units of the pixel layer 222, and the second black matrix may be disposed between the adjacent color resistors of the color resistor layer 213, so as to ensure the directionality of the light emitted from the adjacent color resistors, further reduce the light mixing of the light emitted from the color resistor layer on the light transmission path to the pixel units, improve the color accuracy of the light received by each sub-pixel unit, and ensure the image display effect.
The substrate 221 is, for example, a glass layer, which is located at the top of the liquid crystal display panel 200, and can isolate the external influence on the internal structure of the liquid crystal display panel 200, thereby ensuring the function, and the transparency of the substrate can ensure the display light and the display effect of the picture.
The second common electrode layer 224 may further include a plurality of common electrode blocks, and the second common electrode layer is time-division multiplexed as a touch electrode layer. The common electrode block is connected to the chip through a touch lead, and is used for picture display in a part of time of a frame of picture, and is used for touch detection in another part of time. Preferably, the chip is a touch/display integrated chip (TDDI), which is used for controlling the image display of the liquid crystal display panel, as well as touch detection and touch signal processing. The second common electrode layer 224 is used as a touch sensor, and no other electrode layer is arranged above the touch sensor, so that the touch sensor is not influenced by an electromagnetic shielding effect, and has a large effective sensing area and a good touch sensing effect. If the touch sensor is a capacitive type, when a finger touches the liquid crystal display panel 200, an electric field of a human body acts on the second common electrode layer 224, a capacitance value of a corresponding sensing capacitor changes, a state of the second common electrode layer 224 changes, and a touch point position can be determined according to the capacitance change.
The utility model discloses liquid crystal display panel 200 is when carrying out the wide and narrow visual angle transform, control pixel electrode 226 and the respective voltage of first public electrode layer 211, form the electric field of certain potential difference between the two, the deflection angle of the liquid crystal molecule 231 of control liquid crystal layer 230, control light-emitting visual angle, realize the switching of wide and narrow visual angle, wherein if liquid crystal layer 230 is normal liquid crystal, its liquid crystal molecule 231 is the flat gesture of lying parallel with first public electrode layer 211 when not adding electric field 31, the deviation of 0 to 10 degrees still can exist in actual angle, voltage between pixel electrode 226 and the first public electrode layer 211 when wide visual angle shows can be selected to 1V to 0V, voltage between pixel electrode 226 and the first public electrode layer 211 when narrow visual angle shows can be selected to 3V to 6V.
The utility model discloses a liquid crystal display panel includes the various membrane base plate, liquid crystal layer and the array substrate that set gradually in the light-emitting side of backlight, wherein, the one side that various membrane base plate is close to the liquid crystal layer is provided with first public electrode layer, the one side that the array substrate is close to the liquid crystal layer is provided with pixel electrode, the deflection of the liquid crystal molecule in the liquid crystal layer is responded to the electric field between first public electrode layer and the pixel electrode layer, the position that is far away from the liquid crystal layer than pixel electrode in the array substrate is provided with second public electrode layer, second public electrode layer is used as touch-control sensor, pixel electrode and first public electrode layer all are located the one side towards the backlight of second public electrode layer, the electromagnetic shielding effect of other electrode structure layers to second public electrode layer is avoided, touch-control effect has been ensured, and the voltage of pixel electrode and first public electrode layer is, the switching control of wide and narrow visual angles can be guaranteed, and the design of a TDDI + HVA framework is efficiently realized.
According to the utility model discloses an on the other hand provides a liquid crystal display device includes the utility model provides a liquid crystal display panel and backlight, liquid crystal display panel is located the light-emitting side of backlight. The utility model provides a liquid crystal display device includes above-mentioned liquid crystal display panel, can realize the design of TDDI + HVA framework high-efficiently, the touch-control of the liquid crystal display device who improves and the integrated effect of display driver, can realize simultaneously with HVA's compatibility, improved liquid crystal display device's touch-control and demonstration performance.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A liquid crystal display panel is positioned on the light-emitting side of a backlight layer of a liquid crystal display device, and the liquid crystal display panel comprises:
the color film substrate, the liquid crystal layer and the array substrate are sequentially arranged on the light emergent side of the backlight layer, wherein the color film substrate comprises a first common electrode layer, the array substrate comprises a pixel electrode and a second common electrode layer, and the pixel electrode is closer to the liquid crystal layer than the second common electrode layer.
2. The liquid crystal display panel according to claim 1, wherein the color filter substrate further comprises:
the color resistance layer is closer to the liquid crystal layer than the reflection polarizer layer, and the color resistance layer is arranged on one side, close to the backlight layer, of the first common electrode layer.
3. The lcd panel of claim 1, wherein the array substrate further comprises:
the pixel layer is arranged on one side, far away from the liquid crystal layer, of the second common electrode layer;
and the first black matrix is arranged between adjacent sub-pixel units in the pixel layer.
4. The liquid crystal display panel according to claim 3, wherein the color filter substrate comprises a color resist layer, and the color resist layer comprises a second black matrix, and the second black matrix is disposed between adjacent color resists of the color resist layer.
5. The lcd panel of claim 1, wherein the array substrate further comprises:
and the insulating layer is arranged between the pixel electrode and the second common electrode layer.
6. The liquid crystal display panel according to claim 1, wherein the color filter substrate further comprises:
and a planarization layer disposed between the first common electrode layer and the liquid crystal layer.
7. The liquid crystal display panel according to claim 1, wherein an electrode material of the first common electrode layer is ITO.
8. The liquid crystal display panel according to claim 1, wherein the liquid crystal of the liquid crystal layer is normal liquid crystal.
9. The liquid crystal display panel according to any one of claims 1 to 8, wherein the second common electrode layer includes a plurality of common electrode blocks, and the second common electrode layer is time-division multiplexed as a touch electrode layer.
10. A liquid crystal display device comprising the liquid crystal display panel according to any one of claims 1 to 9 and a backlight layer, wherein the liquid crystal display panel is located on a light exit side of the backlight layer.
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| CN202021051671.8U CN212255968U (en) | 2020-06-09 | 2020-06-09 | Liquid crystal display panel and liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946945A (en) * | 2020-12-31 | 2021-06-11 | 武汉华星光电技术有限公司 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112946945A (en) * | 2020-12-31 | 2021-06-11 | 武汉华星光电技术有限公司 | Display panel and display device |
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