CN114815353A - display panel - Google Patents

Abstract

The application provides a display panel, which includes a first substrate; a liquid crystal layer, disposed above the first substrate; a conductive layer, disposed on the side of the first substrate away from the liquid crystal layer, and the conductive layer and the first substrate form a second A capacitor, the first capacitor is used to change the deflection direction of the liquid crystal in the liquid crystal layer, so as to solve the problem of viewing angle polarization in the display panel.

Description

display panel

technical field

The present invention relates to the field of display technology, and in particular, to a display panel.

Background technique

Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., dominate the field of flat panel display.

Among them, most of the liquid crystal displays are backlight type liquid crystal displays, including a casing, a liquid crystal display panel arranged in the casing, and a backlight module arranged in the casing. The liquid crystal display panel is the main component of the liquid crystal display, but the liquid crystal display panel itself does not emit light, and needs to use the light source provided by the backlight module to display images normally. By applying a voltage, the liquid crystal molecules are controlled to change direction, and the light from the backlight module is refracted to generate a picture. However, the difference in birefringence of liquid crystal molecules in the liquid crystal display panel is relatively large, which leads to a serious problem of color shift.

SUMMARY OF THE INVENTION

The embodiment of the present application provides a display panel, which can solve the problem of viewing angle deviation in the display panel.

Embodiments of the present application provide a display panel, including:

a first substrate;

a liquid crystal layer, disposed above the first substrate;

A conductive layer is disposed on the side of the first substrate away from the liquid crystal layer, the conductive layer and the first substrate form a first capacitor, and the first capacitor is used to change the liquid crystal in the liquid crystal layer. deflection direction.

In some embodiments, the first substrate defines a plurality of pixel regions, each of the pixel regions is divided into a main region and a sub-region, the conductive layer includes a first sub-conductive layer and a second sub-conductive layer, so The orthographic projection of the first sub-conductive layer on the first substrate is located in the main region, and the orthographic projection of the second sub-conductive layer on the first substrate is located in the sub-region.

In some embodiments, an area of an orthographic projection of the first sub-conductive layer on the first substrate is smaller than an area of the main region.

In some embodiments, the first sub-conductive layer is located at the center of the main region.

In some embodiments, the ratio of the area of the orthographic projection of the first sub-conductive layer on the first substrate to the area of the main region is 1:3.

In some embodiments, the area of the orthographic projection of the second sub-conductive layer on the first substrate is smaller than the area of the main region.

In some embodiments, the second sub-conducting layer is located in the middle of the sub-region.

In some embodiments, the ratio of the area of the orthographic projection of the second sub-conductive layer on the first substrate to the area of the sub-region is 1:3.

In some embodiments, the first substrate includes a pixel layer, a passivation layer and a gate insulating layer stacked in sequence, the conductive layer is disposed on a side of the gate insulating layer away from the pixel layer, the The conductive layer and the pixel layer form the first capacitor.

In some embodiments, the display panel further includes a second substrate disposed on a side of the liquid crystal layer away from the first substrate, the first substrate and the second substrate form a second capacitor, the The second capacitor is used to change the deflection direction of the liquid crystal in the liquid crystal layer.

The display panel provided by the embodiment of the present application includes a first substrate, a liquid crystal layer and a conductive layer respectively disposed on both sides of the first substrate, the first substrate and the conductive layer form a first capacitor, and the first capacitor can The liquid crystal layer provides electrical signals to change the deflection direction of liquid crystals in the liquid crystal layer, thereby solving the problem of viewing angle polarization in the display panel.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a circuit diagram of a pixel in the related art provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a first structure of a display panel according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a pixel area provided by an embodiment of the present application.

FIG. 4 is a schematic diagram of a second structure of a display panel according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a third structure of a display panel according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

Liquid crystal displays have many advantages, such as thin body, power saving, and no radiation, and have been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., dominate the field of flat panel display.

Most of the liquid crystal displays are backlit liquid crystal displays, which include a casing, a liquid crystal display panel disposed in the casing, and a backlight module disposed in the casing. The liquid crystal display panel is the main component of the liquid crystal display, but the liquid crystal display panel itself does not emit light, and needs to use the light source provided by the backlight module to display images normally.

However, the difference in birefringence of liquid crystal molecules in the liquid crystal display panel is relatively large, which leads to a serious problem of color shift.

Therefore, reducing the color shift is the development requirement of liquid crystal displays. At present, the mainstream method to solve the color shift of the display panel is to use multi-domain, such as the pixel design of 8-domain display, so that the rotation angles of the liquid crystal molecules of the 4 domains in the main area and the 4 domains in the sub-area in the same sub-pixel are different from each other. the same, thus improving the color cast. Color shift improvement technologies mainly include capacitive coupling (CC) technology, charge sharing (CS) technology, common electrode voltage (Vcom) modulation technology, and 2D1G/2G1D technology.

In the related art, a display panel includes a plurality of sub-pixels, and each sub-pixel is divided into a main area and a sub area with different areas, and data signals are input to the main area and the sub area through the same data signal line (Date). FIG. 1 is a circuit diagram of a pixel in the related art provided by an embodiment of the present application. The main area includes a first thin film transistor T ₁ , a first liquid crystal capacitor _Clc1 and a first storage capacitor C _st1 ; the sub area includes a second thin film transistor T ₂ , a third thin film transistor T ₃ , a second liquid crystal capacitor _Clc2 and The second storage capacitor C _st2 . In the main area, the gate of the _first thin film transistor T1 is electrically connected to the scan line, and the source is electrically connected to the data signal line Data; the first liquid crystal capacitor C _lc1 is connected in parallel with the first storage capacitor C _st1 and one end is electrically connected to the first storage capacitor C st1 . The drain electrode of the _first thin film transistor T1 is electrically connected to a constant voltage at the other end; in the sub-region, the gate electrode of the _second thin film transistor T2 is electrically connected to the scan line, and the source electrode is electrically connected to the data signal line Data; The second liquid crystal capacitor _Clc2 is connected in parallel with the second storage capacitor C _st2 , one end is electrically connected to the drain of the _second thin film transistor T2, the other end is electrically connected to a constant voltage, the gate of the _third thin film transistor T3 is electrically connected Connected to the scan line, the drain is electrically connected to a constant voltage, the second liquid crystal capacitor _Clc2 is connected in parallel with the second storage capacitor _Cst2 , and one end is electrically connected to the source of the _third thin film transistor T3. The above design forms a multi-domain pixel design, which can improve the problem of viewing angle deviation in the display panel. However, this design needs to change the circuit in the existing display panel, and the cost of the display panel is relatively high. Therefore, the present application provides a display panel, which can solve the problem of viewing angle deviation in the display panel and has a low cost. A specific description is given below in conjunction with the accompanying drawings.

Please refer to FIG. 2 , which is a schematic diagram of a first structure of a display panel according to an embodiment of the present application.

An embodiment of the present application provides a display panel 100 . The display panel 100 includes a first substrate 110 , a liquid crystal layer 120 and a conductive layer 130 . The liquid crystal layer 120 is disposed above the first substrate 110 , and the conductive layer 130 is disposed on the first substrate 110 . On the side of the substrate 110 away from the liquid crystal layer 120 , the conductive layer 130 and the first substrate 110 form a first capacitor, and the first capacitor is used to change the deflection direction of the liquid crystal in the liquid crystal layer 120 .

Wherein, the first substrate 110 may be a transistor substrate, and the first substrate 110 includes a first transparent substrate with conductive properties, such as indium tin oxide (ITO). The first substrate 110 further includes a thin film transistor and a common electrode layer. One end of the first capacitor formed by the conductive layer 130 and the first substrate 110 is connected to the drain of the thin film transistor in the transistor substrate, and the other end is connected to a constant voltage. For example, the other end is connected to the common electrode layer in the transistor substrate, so as to transmit electrical signals to the liquid crystal layer 120 to change the deflection direction of the liquid crystal in the liquid crystal layer 120 .

Wherein, the conductive layer 130 may be metal or a second transparent substrate with conductive properties, for example, the second transparent substrate is indium tin oxide. If the conductive layer 130 is indium tin oxide, the specific forming process may be: forming an indium tin oxide film on the first substrate 110, then coating a photoresist on the indium tin oxide film, and then exposing and developing the photoresist, Thereby, a patterned photoresist is obtained, and then the indium tin oxide film exposed through the photoresist is etched to obtain the conductive layer 130 .

The display panel 100 provided by the embodiment of the present application includes a first substrate 110 , a liquid crystal layer 120 and a conductive layer 130 respectively disposed on both sides of the first substrate 110 , and the first substrate 110 and the conductive layer 130 form a first substrate 110 . The first capacitor can provide an electrical signal to the liquid crystal layer 120 , thereby changing the deflection direction of the liquid crystal in the liquid crystal layer 120 , thereby solving the problem of viewing angle polarization in the display panel 100 .

In some embodiments, please refer to FIG. 3 , which is a schematic diagram of a pixel region provided by an embodiment of the present application. The first substrate 110 defines a plurality of pixel regions 111 , each pixel region 111 is divided into a main region 1111 and a sub-region 1112 , and the conductive layer 130 is divided into a plurality of first sub-conductive layers 131 and a plurality of second sub-conductive layers 132 , the orthographic projection of the first sub-conductive layer 131 on the first substrate 110 is located in the main region 1111 , and the orthographic projection of the second sub-conductive layer 132 on the second substrate 140 is located in the sub-region 1112 .

The number of the first sub-conductive layer 131 and the second sub-conductive layer 132 is multiple. The plurality of main regions 1111 are in one-to-one correspondence with the plurality of first sub-conductive layers 131 , and the plurality of sub-regions 1112 are in one-to-one correspondence with the plurality of second sub-conductive layers 132 . For example, the orthographic projection area of the first sub-conductive layer 131 on the substrate is the first area of the first substrate 110 , and the first area of the first substrate 110 and the first sub-conductive layer 131 form a first capacitor, the first capacitor Acting on the liquid crystal of the liquid crystal layer 120 between the first region of the first substrate 110 and the first sub-conductive layer 131 . For another example, the orthographic projection area of the second sub-conductive layer 132 on the substrate is the second area of the first substrate 110 , the second area of the first substrate 110 and the second sub-conductive layer 132 form a first capacitor, the first The capacitance acts on the liquid crystal of the liquid crystal layer 120 between the second region of the first substrate 110 and the second sub-conductive layer 132 .

It can be understood that, by dividing the pixel area 111 of the first substrate 110 , each pixel area 111 forms at least two capacitors, and the two capacitors are respectively related to the main area 1111 and the sub area in each pixel area 111 . The liquid crystal of the liquid crystal layer 120 corresponding to 1112 is deflected and controlled, so as to accurately control the liquid crystal of the liquid crystal layer 120 and further solve the problem of viewing angle polarization in the display panel 100 .

In some embodiments, the area of the orthographic projection of the first sub-conductive layer 131 on the first substrate 110 is smaller than the area of the main region 1111 . For example, the orthographic projection area of the first sub-conductive layer 131 on the first substrate 110 is the first area of the first substrate 110 , and the orthographic projection area of the first sub-conductive layer 131 not on the first substrate 110 is the first area In the third region of the substrate 110 , the first region of the first substrate 110 and the first sub-conductive layer 131 form a first capacitor, and the first capacitor acts on the first region of the first substrate 110 and the first sub-conductive layer 131 The liquid crystal of the liquid crystal layer 120 between the third region of the first substrate 110 and the first sub-conductive layer 131 cannot form a first capacitance, so the liquid crystal layer between the third region and the first sub-conductive layer 131 cannot be formed. The liquid crystal of 120 is deflected. For the main region 1111 , due to the existence of the first capacitor, the deflection direction of the liquid crystal of the liquid crystal layer 120 corresponding to the first region of the first substrate 110 may be the same as that of the liquid crystal layer 120 corresponding to the third region of the first substrate 110 . The deflection directions of the liquid crystals are different, which further solves the problem of viewing angle deflection in the display panel 100 .

In some embodiments, the ratio of the orthographic projection area of the first sub-conductive layer 131 on the first substrate 110 to the area of the main region 1111 is 1:3. It should be noted that the ratio of the orthographic projection area of the first sub-conductive layer 131 on the liquid crystal layer 120 to the area of the main region 1111 is not limited to 1:3, and those skilled in the art can set different ratios as required.

In some embodiments, the first sub-conducting layer 131 is located at the center of the main region 1111 . That is to say, when the orthographic projection area of the first sub-conductive layer 131 on the first substrate 110 is the first area, the orthographic projection area of the first sub-conductive layer 131 not on the first substrate 110 is the third area. At the same time, the third area is surrounded by the first area. The deflection direction of the liquid crystal in the liquid crystal layer 120 corresponding to the first area is different from the deflection direction of the liquid crystal in the liquid crystal layer 120 corresponding to the third area, thereby increasing the number of pixel areas 111 .

In some embodiments, the area of the orthographic projection of the second sub-conductive layer 132 on the first substrate 110 is smaller than the area of the sub-region 1112 . For example, the orthographic projection area of the second sub-conductive layer 132 on the first substrate 110 is the second area of the first substrate 110 , and the orthographic projection area of the second sub-conductive layer 132 not on the first substrate 110 is the first area In the fourth region of the substrate 110 , the second region of the first substrate 110 and the second sub-conductive layer 132 form a first capacitor, and the first capacitor acts on the second region of the first substrate 110 and the second sub-conductive layer 132 The liquid crystal of the liquid crystal layer 120 between the fourth region of the first substrate 110 and the second sub-conductive layer 132 cannot form a first capacitance, so the liquid crystal layer between the fourth region and the second sub-conductive layer 132 cannot be formed. The liquid crystal of 120 is deflected. For the sub-region 1112 , due to the existence of the first capacitor, the deflection direction of the liquid crystal of the liquid crystal layer 120 corresponding to the second region of the first substrate 110 may be the same as that of the liquid crystal layer 120 corresponding to the fourth region of the first substrate 110 . The deflection directions of the liquid crystals are different, which further solves the problem of viewing angle deflection in the display panel 100 . In some embodiments, the ratio of the orthographic projection area of the second sub-conductive layer 132 on the first substrate 110 to the area of the sub-region 1112 is 1:3. It should be noted that the ratio of the orthographic projection area of the second sub-conductive layer 132 on the first substrate 110 to the area of the sub-region 1112 is not limited to 1:3, and those skilled in the art can set different ratios as required.

In some embodiments, the second sub-conducting layer 132 is located at the center of the sub-region 1112 . That is to say, when the orthographic projection area of the second sub-conductive layer 132 on the first substrate 110 is the second area, the orthographic projection area of the second sub-conductive layer 132 not on the first substrate 110 is the fourth area. At the same time, the fourth area is surrounded by the second area. The deflection direction of the liquid crystal in the liquid crystal layer 120 corresponding to the second area is different from the deflection direction of the liquid crystal in the liquid crystal layer 120 corresponding to the fourth area, thereby increasing the number of pixel areas 111 .

In some embodiments, please refer to FIG. 4 , which is a schematic diagram of a second structure of a display panel provided by an embodiment of the present application. The first substrate 110 includes a pixel layer 112, a passivation layer 113 and a gate insulating layer 114 stacked in sequence. The conductive layer 130 is disposed on the side of the gate insulating layer 114 away from the pixel layer 112. The conductive layer 130 and the pixel layer 112 forms a first capacitor. On the one hand, the passivation layer 113 and the gate insulating layer 114 serve as insulating media in the first capacitor; on the other hand, the passivation layer 113 and the gate insulating layer 114 can support the pixel layer 112 and the conductive layer 130, so that the The connection relationship between the passivation layer 113 and the conductive layer 130 is stable.

In some embodiments, please refer to FIG. 5 , which is a schematic diagram of a third structure of a display panel according to an embodiment of the present application. The display panel 100 further includes a second substrate 140 disposed on a side of the liquid crystal layer 120 away from the first substrate 110 , and the first substrate 110 and the second substrate 140 form a second capacitor. The second capacitor may be a liquid crystal capacitor, and the second capacitor can provide an electrical signal to the liquid crystal layer 120 so as to change the deflection direction of the liquid crystal in the liquid crystal layer 120 . Optionally, the second substrate 140 serving as a color filter layer substrate may include a second transparent substrate with conductive properties, a light shielding layer disposed on the second transparent substrate, and a color filter layer disposed on the light shielding layer. The above-mentioned color filter layer may include a red filter layer, a green filter layer, a blue filter layer, or any other suitable color filter layer. The second transparent substrate may be indium tin oxide.

The display panel 100 provided by the embodiment of the present application includes a first substrate 110 , a liquid crystal layer 120 and a conductive layer 130 respectively disposed on both sides of the first substrate 110 , and the first substrate 110 and the conductive layer 130 form a first substrate 110 . The first capacitor can provide an electrical signal to the liquid crystal layer 120 , thereby changing the deflection direction of the liquid crystal in the liquid crystal layer 120 , thereby solving the problem of viewing angle polarization in the display panel 100 .

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

In the description of this application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more features.

The display panel provided by the embodiments of the present application has been described in detail above. The principles and implementations of the present application are described herein by using specific examples, and the descriptions of the above embodiments are only used to help the understanding of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. To sum up, the content of this specification should not be construed as a limitation to the present application.

Claims (10)

1. A display panel, characterized in that, comprising: a first substrate; a liquid crystal layer, disposed above the first substrate; A conductive layer is disposed on the side of the first substrate away from the liquid crystal layer, the conductive layer and the first substrate form a first capacitor, and the first capacitor is used to change the liquid crystal in the liquid crystal layer. deflection direction. 2 . The display panel according to claim 1 , wherein the first substrate defines a plurality of pixel regions, each of the pixel regions is divided into a main region and a sub-region, and the conductive layer comprises a first sub-region. 3 . A conductive layer and a second sub-conductive layer, the orthographic projection of the first sub-conductive layer on the first substrate is located in the main region, and the orthographic projection of the second sub-conductive layer on the first substrate is located in the main area the sub-region. 3 . The display panel according to claim 2 , wherein an area of an orthographic projection of the first sub-conductive layer on the first substrate is smaller than an area of the main region. 4 . 4 . The display panel of claim 2 , wherein the first sub-conductive layer is located at the center of the main region. 5 . 5 . The display panel according to claim 4 , wherein the ratio of the area of the orthographic projection of the first sub-conductive layer on the first substrate to the area of the main region is 1:3. 6 . 6 . The display panel according to claim 2 , wherein an area of an orthographic projection of the second sub-conductive layer on the first substrate is smaller than an area of the sub-region. 7 . 7 . The display panel of claim 6 , wherein the second sub-conductive layer is located in the middle of the sub-region. 8 . 8 . The display panel according to claim 6 , wherein the ratio of the area of the orthographic projection of the second sub-conductive layer on the first substrate to the area of the sub-region is 1:3. 9 . 9 . The display panel according to claim 1 , wherein the first substrate comprises a pixel layer, a passivation layer and a gate insulating layer stacked in sequence, and the conductive layer is disposed on the The gate insulating layer is at a side away from the pixel layer, and the conductive layer and the pixel layer form the first capacitor. 10 . The display panel according to claim 1 , further comprising a second substrate disposed on a side of the liquid crystal layer away from the first substrate, the first substrate being connected to the first substrate. 11 . The second substrate forms a second capacitor, and the second capacitor is used to change the deflection direction of the liquid crystal in the liquid crystal layer.

Images