Pixel structure and display panel

Abstract

The present disclosure belongs to the field of display technology, and specifically relates to a pixel structure and a display panel. The pixel structure includes a support, a pixel electrode, a pressure-sensitive element, and a first switch and a second switch respectively connected to the pixel electrode. The support is used to support and form a storage space for storing liquid crystal. The pressure-sensitive element is arranged in the connection line between the second switch and the pixel electrode. One end of the support is pressed against the pressure-sensitive element. The pressure-sensitive element is reduced based on the pressure resistance of the support, and the charge flowing through the second switch is increased. The present disclosure arranges the pressure-sensitive element in the connection line between the pixel electrode and the second switch, and presses one end of the support against the pressure-sensitive element. By using the characteristic that the pressure-sensitive element is negatively correlated with the pressure it receives, and the characteristic that the second switch can charge or discharge the pixel electrode, the voltage on the pixel electrode can be adjusted according to the height of the support in the pixel structure to control the deflection angle of the liquid crystal and improve the uniformity of the brightness displayed by the pixel structure.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a pixel structure and a display panel. Background Art

[0002] The box thickness of the pixel structure is affected by the supporting members. The higher the supporting members are, the greater the box thickness of the pixel structure is. At the same time, the box thickness of the pixel structure will affect its display brightness. The greater the box thickness of the pixel structure is, the higher the display brightness of the pixel structure is. The smaller the box thickness of the pixel structure is, the lower the display brightness of the pixel structure is. However, it is currently very difficult to improve the uniformity of the height of the supporting members, which in turn makes it difficult to improve the uniformity of the display brightness of the pixel structure. Summary of the invention

[0003] The purpose of the present application is to provide a pixel structure and a display panel, which can adjust the resistance of a pressure-sensitive element according to the different heights of a support in the pixel structure, and use a second switch to charge or discharge the pixel electrode to adjust the voltage on the pixel electrode, thereby controlling the deflection angle of the liquid crystal, and can adjust the light transmittance of the pixel structure at the support positions at different heights and the display brightness of the pixel structure at the support positions at different heights, so as to improve the uniformity of the display brightness of the pixel structure.

[0004] The present disclosure provides a pixel structure, the pixel structure comprising a support member, the support member being used to support a storage space for storing liquid crystal, the pixel structure further comprising a pixel electrode, and a first switch and a second switch respectively connected to the pixel electrode, the pixel structure further comprising:

[0005] A pressure-sensitive element is provided in the connection line between the second switch and the pixel electrode, one end of the support member presses against the pressure-sensitive element, and the pressure-sensitive element decreases in resistance value based on the pressure of the support member, and the charge flowing through the second switch increases.

[0006] In an exemplary embodiment of the present disclosure, the pressure sensing element is a piezoresistor.

[0007] In an exemplary embodiment of the present disclosure, one second switch is provided, and a plurality of the supporting members and the pressure-sensitive elements are provided. The plurality of supporting members are arranged around the pixel electrode, and at least some of the supporting members correspond to the pressure-sensitive elements. The plurality of pressure-sensitive elements are arranged in series and are arranged in the connection line between the second switch and the pixel electrode.

[0008] In an exemplary embodiment of the present disclosure, a plurality of the second switches, the supporting members and the pressure-sensitive elements are provided, and the plurality of the supporting members are arranged around the pixel electrode, at least some of the supporting members are provided corresponding to the pressure-sensitive elements, the plurality of the second switches are connected in parallel, and the second switches and the pressure-sensitive elements are provided one-to-one.

[0009] In an exemplary embodiment of the present disclosure, the pixel structure also includes a first polarizer, a second polarizer and a liquid crystal layer, the absorption axes of the first polarizer and the second polarizer are parallel, the liquid crystal layer is arranged between the first polarizer and the second polarizer, the light enters the liquid crystal layer through the first polarizer, and the polarization direction is twisted under the action of the liquid crystal, the pixel structure is displayed in a normally black mode, the first switch is a charging switch, the second switch is a leakage switch, and the charge of the pixel electrode is released through the second switch.

[0010] In an exemplary embodiment of the present disclosure, the pixel structure also includes a first polarizer, a second polarizer and a liquid crystal layer, the absorption axes of the first polarizer and the second polarizer are orthogonal, the liquid crystal layer is arranged between the first polarizer and the second polarizer, the light enters the liquid crystal layer through the first polarizer, and the polarization direction is twisted under the action of the liquid crystal, the pixel structure is displayed in a normally white mode, the first switch and the second switch are both charging switches, and the charge of the pixel electrode is increased through the second switch.

[0011] In an exemplary embodiment of the present disclosure, the second switch includes:

[0012] Gate;

[0013] A gate insulating layer, located on a side of the gate electrode close to the pixel electrode, the gate insulating layer covers the gate electrode;

[0014] A semiconductor, located at a side of the gate insulating layer away from the gate, and the semiconductor is arranged corresponding to the gate;

[0015] The source and drain are located on a side of the gate insulating layer away from the gate, the source and drain are both connected to the semiconductor, the source and drain are spaced apart, and the source of the second switch is connected to the pressure sensing element.

[0016] In an exemplary embodiment of the present disclosure, the pixel structure includes a color filter substrate, one end of the support member abuts against the color filter substrate, and the other end of the support member abuts against the pressure sensing element.

[0017] In an exemplary embodiment of the present disclosure, the pixel structure includes a scan line, a data line, a common electrode, a liquid crystal capacitor and a storage capacitor.

[0018] The liquid crystal capacitor comprises the common electrode and the pixel electrode which are arranged opposite to each other, and the electric field provided by the liquid crystal capacitor is used to control the deflection of the liquid crystal;

[0019] The storage capacitor comprises the common electrode and the pixel electrode which are arranged opposite to each other, and the storage capacitor is used to supply power to the liquid crystal capacitor;

[0020] The control end of the first switch is used to connect to the scan line, the first end of the first switch is used to connect to the data line, and the second end of the first switch is used to connect to the pixel electrode;

[0021] The control end of the second switch is used to connect to the scan line, the first end of the second switch is used to connect to the pixel electrode, and the second end of the second switch is used to connect to the common electrode.

[0022] The present disclosure provides a display panel, comprising a substrate and a plurality of pixel structures as described above, wherein the plurality of pixel structures are formed on the substrate.

[0023] This application scheme has the following beneficial effects:

[0024] The present invention designs a pixel structure, which includes a pixel electrode, a first switch, a second switch and a pressure-sensitive element. The first switch and the second switch are respectively connected to the pixel electrode, and the pressure-sensitive element is arranged in a connection line between the pixel electrode and the second switch. One end of a support member presses against the pressure-sensitive element, and the resistance of the pressure-sensitive element is reduced based on the pressure of the support member, thereby increasing the charge flowing through the second switch. The pixel electrode is charged or discharged through the second switch to adjust the voltage on the pixel electrode to further control the deflection angle of the liquid crystal, so that the light transmittance of the pixel structure at different box thickness positions and the display brightness of the pixel structure at different box thickness positions can be adjusted to improve the uniformity of the display brightness of the pixel structure.

[0025] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0028] Figure 1 Schematic diagram of the cross-sectional structure of the pixel structure in the embodiment of the present disclosure.

[0029] Figure 2 Schematic diagram of the cross-sectional structure of the deflection angle of the liquid crystal at different cell thickness positions when the pixel structure in the embodiment of the present disclosure is displayed in the normally black mode.

[0030] Figure 3 Schematic diagram of a top view of a pixel structure in an embodiment of the present disclosure.

[0031] Figure 4 Schematic diagram of an equivalent circuit of a pixel structure in an embodiment of the present disclosure.

[0032] Figure 5 It is a schematic diagram of the cross-sectional structure of the display panel in the embodiment of the present disclosure.

[0033] Description of reference numerals:

[0034] 1. Display panel;

[0035] 2. Pixel structure;

[0036] 201, support member; 202, liquid crystal; 203, pressure sensing element; 204, pixel electrode; 205, gate electrode; 206, gate insulating layer; 207, semiconductor; 208, source electrode; 209, drain electrode; 210, passivation layer; 211, color film substrate;

[0037] 3. Substrate;

[0038] T1, first switch; T2, second switch; Clc, liquid crystal capacitor; Cst, storage capacitor;

[0039] Gate, scan line; Data, data line; Acom, common signal terminal. DETAILED DESCRIPTION

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0041] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

[0042] The present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0043] The present disclosure provides a pixel structure 2, which includes a support member 201, and the support member 201 is used to support a storage space for storing liquid crystal 202. The pixel structure 2 also includes a pressure-sensitive element 203, a pixel electrode 204, a first switch T1 and a second switch T2, wherein the pixel electrode 204 is connected to the first switch T1 and the second switch T2 respectively, and the pressure-sensitive element 203 is arranged in a connection line between the second switch T2 and the pixel electrode 204. One end of the support member 201 presses against the pressure-sensitive element 203, and the resistance of the pressure-sensitive element 203 is reduced based on the pressure of the support member 201, that is, the greater the pressure of the support member 201 pressing the pressure-sensitive element 203, the smaller the resistance of the pressure-sensitive element 203. When the voltage applied to the second switch T2 and the pressure-sensitive element 203 is constant, the resistance of the pressure-sensitive element 203 is reduced, and the charge flowing through the second switch T2 and the pressure-sensitive element 203 is increased. For details, please refer to Figures 1 to 5 shown.

[0044] It should be noted that the support member 201 is used to support the box thickness of the pixel structure 2 and improve the uniformity of the box thickness of the pixel structure 2. Furthermore, the box thickness of the pixel structure 2 will affect the display brightness of the pixel structure 2. The larger the box thickness, the higher the display brightness of the pixel structure 2, and the smaller the box thickness, the lower the display brightness of the pixel structure 2. However, it is currently very difficult to improve the uniformity of the height of the support member 201, which makes it difficult to further improve the uniformity of the pixel structure 2. The present disclosure sets a pressure sensing element 203 in the pixel structure 2, and makes one end of the support member 201 press against the pressure sensing element 203, using the pressure sensing element 203 to increase the uniformity of the pixel structure 2. 3 has a negative correlation between the resistance value and the pressure it is subjected to. When the pressure of the support member 201 on the pressure-sensitive element 203 is greater, the resistance value of the pressure-sensitive element 203 is smaller, and the charge flowing through the second switch T2 and the pressure-sensitive element 203 increases. The second switch T2 is used to charge or discharge the pixel electrode 204, so that the voltage on the pixel electrode 204 can be adjusted to further control the deflection angle of the liquid crystal 202, so that the light transmittance of the pixel structure 2 at different box thickness positions and the display brightness of the pixel structure 2 at different box thickness positions can be adjusted to improve the uniformity of the display brightness of the pixel structure 2.

[0045] The pressure sensing element 203 in the embodiment of the present disclosure may be a piezoresistor. The greater the pressure exerted by the support member 201 on the piezoresistor, the smaller the resistance of the piezoresistor. However, the present invention is not limited thereto. The pressure sensing element 203 may also be another pressure sensing semiconductor 207 element other than a piezoresistor, so that the resistance of the pressure sensing element 203 decreases as the pressure exerted by the support member 201 increases.

[0046] like Figure 1 As shown, the second switch T2 may include: a gate 205, a gate insulating layer 206, a semiconductor 207, a source 208 and a drain 209, wherein the gate insulating layer 206 is located on a side of the gate 205 close to the pixel electrode 204, and the gate insulating layer 206 covers the gate 205; the semiconductor 207 is located on a side of the gate insulating layer 206 away from the gate 205, and the semiconductor 207 is arranged corresponding to the gate 205; the source 208 and the drain 209 are located on a side of the gate insulating layer 206 away from the gate 205, the source 208 and the drain 209 are both connected to the semiconductor 207, the source 208 and the drain 209 are arranged at intervals, and the source 208 of the second switch T2 is connected to the pressure sensing element 203. However, the present invention is not limited thereto. A passivation layer 210 may be formed on the side of the source 208 and the drain 209 facing away from the gate insulating layer 206 of the second switch T2 to seal the semiconductor 207, the source 208 and the drain 209, thereby reducing the possibility of oxidation corrosion of the semiconductor 207, the source 208 and the drain 209 when in contact with the outside air, thereby extending the service life of the second switch T2.

[0047] In addition, the first switch T1 may also include a gate 205, a gate insulating layer 206, a semiconductor 207, a source 208, a drain 209 and a passivation layer 210. In the first switch T1, the gate insulating layer 206 is located on a side of the gate 205 close to the pixel electrode 204, and the gate insulating layer 206 covers the gate 205; the semiconductor 207 is located on a side of the gate insulating layer 206 away from the gate 205, and the semiconductor 207 is arranged corresponding to the gate 205; the source 208 and the drain 209 are located on a side of the gate insulating layer 206 away from the gate 205, the source 208 and the drain 209 are connected to the semiconductor 207, and the source 208 and the drain 209 are arranged at intervals. The passivation layer 210 is located on a side of the source 208 and the drain 209 away from the gate insulating layer 206 to seal the semiconductor 207, the source 208 and the drain 209, and the drain 209 of the first switch T1 is connected to the pixel electrode 204.

[0048] When manufacturing the pixel structure 2, a gate 205, a gate insulating layer 206, a semiconductor 207, a source 208 and a drain 209 can be sequentially prepared on a substrate 3 to simultaneously form a first switch T1 and a second switch T2, and the manufacturing process of the pixel structure 2 can be simplified. A passivation layer 210 is formed on the side of the semiconductor 207, the source 208 and the drain 209 away from the gate insulating layer 206, and a via hole is formed on the passivation layer 210. The via hole is located on the side of the drain 209 of the first switch T1 away from the gate insulating layer 206. A pixel electrode 204 is formed on the side of the passivation layer 210 away from the semiconductor 207, and the pixel electrode 204 is connected to the drain 209 of the first switch T1 through the via hole.

[0049] In the embodiment of the present disclosure, the materials for preparing the gate 205, the source 208 and the drain 209 can be metal materials such as molybdenum (Mo) and aluminum (Al). The gate insulating layer 206 and the passivation layer 210 can be made of materials such as silicon oxide (SiOx) or silicon nitride (SiNx). The semiconductor 207 can be prepared using materials such as polycrystalline silicon (Poly-Si), amorphous silicon (A-Si), indium gallium zinc oxide (IGZO), zinc oxide (ZnO), etc., but are not limited to these and can be selected according to the actual pixel structure 2.

[0050] It should be noted that the material of the pressure sensing element 203 can be the same as that of the semiconductor 207 to save the manufacturing cost of the pixel structure 2, but it is not limited to this, and the pixel structure 2 can also be made of a material different from the semiconductor 207. When the material of the pressure sensing element 203 is the same as that of the semiconductor 207, the pressure sensing element 203 can be formed at the same time as the semiconductor 207 to simplify the manufacturing process of the pixel structure 2, but it is not limited to this, and the pressure sensing element 203 can also be formed independently of the manufacturing process of the semiconductor 207.

[0051] Furthermore, the pixel structure 2 in the embodiment of the present disclosure further includes a first polarizer, a second polarizer and a liquid crystal 202 layer. Please refer to the first and second embodiments for details.

[0052] Embodiment 1

[0053] The absorption axes of the first polarizer and the second polarizer in the pixel structure 2 are parallel, and the liquid crystal 202 layer is arranged between the first polarizer and the second polarizer. When light passes through the first polarizer and enters the liquid crystal 202 layer, when no voltage is applied to the liquid crystal 202 layer, the polarization direction of the light is twisted 90° under the action of the liquid crystal 202, and the light cannot pass through the second polarizer, and the pixel structure 2 does not display the picture; when light passes through the first polarizer and enters the liquid crystal 202 layer, if a voltage is applied to the liquid crystal 202 layer, the liquid crystal 202 is rearranged so that the polarization direction of the light no longer rotates under the action of the liquid crystal 202, so that the light can pass through the second polarizer and enter a wide viewing angle, and the pixel structure 2 displays the picture. At this time, the pixel structure 2 is displayed in a normally black mode, and the first switch T1 is a charging switch, the second switch T2 is a leakage switch, and the charge of the pixel electrode 204 is released through the second switch T2.

[0054] When the charge amount of the pixel electrode 204 remains unchanged: the greater the force exerted by the support frame on the pressure-sensitive element 203, the smaller the resistance of the pressure-sensitive element 203, the more charge flowing through the second switch T2 and the pressure-sensitive element 203, the larger the leakage amount of the pixel electrode 204, the smaller the voltage of the pixel electrode 204, the smaller the deflection angle of the liquid crystal 202, and less light can enter the wide field of view through the second polarizer, so that the higher the position of the support member 201, the greater the decrease in brightness of the pixel structure 2; the smaller the force exerted by the support frame on the pressure-sensitive element 203, the larger the resistance of the pressure-sensitive element 203, the less charge flowing through the second switch T2 and the pressure-sensitive element 203, the smaller the leakage amount of the pixel electrode 204, the larger the voltage of the pixel electrode 204, the larger the deflection angle of the liquid crystal 202, and more light can enter the wide field of view through the second polarizer, so that the lower the position of the support member 201, the smaller the decrease in brightness of the pixel structure 2. For details, please refer to Figure 2 shown.

[0055] Embodiment 2

[0056] The absorption axes of the first polarizer and the second polarizer in the pixel structure 2 are orthogonal, and the liquid crystal 202 layer is arranged between the first polarizer and the second polarizer. When the light passes through the first polarizer and enters the liquid crystal 202 layer, when no voltage is applied to the liquid crystal 202 layer, the polarization direction of the light is twisted by 90° under the action of the liquid crystal 202, and the light passes through the second polarizer to enter the wide viewing angle, and the pixel structure 2 displays the picture; when the light passes through the first polarizer and enters the liquid crystal 202 layer, if a voltage is applied to the liquid crystal 202 layer, the liquid crystal 202 is rearranged so that the polarization direction of the light no longer rotates under the action of the liquid crystal 202, so that the light cannot pass through the second polarizer and enter the wide viewing angle, and the pixel structure 2 does not display the picture. At this time, the pixel structure 2 is displayed in the normally white mode, and the first switch T1 and the second switch T2 are both charging switches, and the second switch T2 charges the pixel electrode 204.

[0057] When the leakage amount of the pixel electrode 204 remains unchanged: the greater the force on the pressure-sensitive element 203, the smaller the resistance of the pressure-sensitive element 203, the more charge flowing through the second switch T2 and the pressure-sensitive element 203, the greater the charge of the pixel electrode 204, the greater the voltage of the pixel electrode 204, the smaller the deflection angle of the liquid crystal 202, and less light can enter the wide field of view through the second polarizer, so that the higher the position of the support member 201, the greater the decrease in brightness of the pixel structure 2; the smaller the force on the pressure-sensitive element 203, the larger the resistance of the pressure-sensitive element 203, the less charge flowing through the second switch T2 and the pressure-sensitive element 203, the less charge of the pixel electrode 204, the smaller the voltage of the pixel electrode 204, the larger the deflection angle of the liquid crystal 202, and more light can enter the wide field of view through the second polarizer, so that the lower the position of the support member 201, the smaller the decrease in brightness of the pixel structure 2.

[0058] In combination with the first and second embodiments, it can be known that the present application sets a pixel electrode 204, a first switch T1, a second switch T2, and a pressure-sensitive element 203 in the pixel structure 2, sets the pressure-sensitive element 203 on the connection line between the pixel electrode 204 and the second switch T2, and presses the support member 201 against the pressure-sensitive element 203, and utilizes the characteristic that the resistance value of the pressure-sensitive element 203 is negatively correlated with the pressure it receives, and the characteristic that the second switch T2 can charge or discharge the pixel electrode 204, so as to realize the present invention. The height of the support member 201 is adjusted to adjust the voltage on the pixel electrode 204, and then the deflection angle of the liquid crystal 202 can be controlled, so that the display brightness of the pixel structure 2 at the position where the pressure-sensitive element 203 is subjected to greater force is reduced to a greater extent, and the display brightness of the pixel structure 2 at the position where the pressure-sensitive element 203 is subjected to less force is reduced to a lesser extent, thereby, the brightness of the pixel structure 2 at a higher position of the support member 201 is close to the brightness of the pixel structure 2 at a lower position of the support member 201, and then the uniformity of the display brightness of the pixel structure 2 can be improved.

[0059] like Figure 1 As shown, the pixel structure 2 in the embodiment of the present disclosure further includes a color filter substrate 211 , one end of the support member 201 abuts against the color filter substrate 211 , and the other end of the support member 201 abuts against the pressure sensing element 203 to support the liquid crystal 202 layer that forms the storage liquid crystal 202 .

[0060] In addition, the pixel structure 2 further includes a scan line Gate, a data line Data, a common electrode, a liquid crystal capacitor Clc and a storage capacitor Cst. Figure 3 and Figure 4 As shown, the liquid crystal capacitor Clc may include a common electrode and a pixel electrode 204 disposed oppositely, the electric field provided by the liquid crystal capacitor Clc is used to control the deflection of the liquid crystal 202, the storage capacitor Cst may include a common electrode and a pixel electrode 204 disposed oppositely, and the storage capacitor Cst is used to supply power to the liquid crystal capacitor Clc to maintain the charge amount of the liquid crystal capacitor Clc. By controlling the voltage on the pixel electrode 204 and the common electrode, the electric field size in the liquid crystal capacitor Clc and the charge amount stored in the storage capacitor Cst are controlled, so that the deflection angle of the liquid crystal 202 can be controlled to change the transmittance of light in the pixel structure 2, so that the pixel structure 2 presents different display brightness.

[0061] Specifically, the control end of the first switch T1 is used to connect to the scan line Gate, the first end of the first switch T1 (i.e., the source 208 of the first switch T1) is used to connect to the data line Data, the second end of the first switch T1 (i.e., the drain 209 of the first switch T1) is connected to the pixel electrode 204, and the first switch T1 is used to charge the pixel electrode 204; the control end of the second switch T2 is used to connect to the scan line Gate, the first end of the second switch T2 (i.e., the source 208 of the second switch T2) is used to connect to the pixel electrode 204, and the second end of the second switch T2 (i.e., the drain 209 of the second switch T2) is connected to the common electrode. Among them, the scanning line Gate can pass the scanning signal to control the first switch T1 and the second switch T2 to open, that is, to control the first end and the second end of the first switch T1, and the first end and the second end of the second switch T2 to be in the on state, and the driving voltage carried on the data line Data is sequentially charged into the pixel electrode 204 through the first end and the second end of the first switch T1, which can also be understood as charging the driving voltage into the liquid crystal capacitor Clc and the storage capacitor Cst. During the opening time of the second switch T2, when the voltage on the pixel electrode 204 passes through the pressure sensing element 203 and the second switch T2, the second switch T2 discharges or charges the pixel electrode 204 to compensate for the brightness caused by the thickness of the pixel structure 2, so that the brightness of the pixel structure 2 at a higher position of the support member 201 approaches the brightness of the pixel structure 2 at a lower position of the support member 201, so as to improve the uniformity of the display brightness of the pixel structure 2. When the first switch T1 and the second switch T2 are both closed, the display of the pixel structure 2 in the holding stage is not affected.

[0062] Specifically, when the normally black mode is displayed, the second switch T2 is a leakage switch, and the liquid crystal capacitor Clc and the storage capacitor Cst release charges to the common electrode through the pressure-sensitive element 203 and the second switch T2, and the voltage of the pixel electrode 204 decreases: when the pressure-sensitive element 203 is subjected to a large force, the resistance of the pressure-sensitive element 203 is small, and the amount of charge flowing through the pressure-sensitive element 203 and the second switch T2 is large. The amount of charge released by the liquid crystal capacitor Clc and the storage capacitor Cst is large, so that the voltage on the pixel electrode 204 is small, the deflection angle of the liquid crystal 202 is small, and less light can pass through the second polarizer to enter the wide field of view, and the display of the pixel structure 2 at a position with a higher box thickness is The reduction in brightness is relatively large; when the force applied to the pressure-sensitive element 203 is relatively small, the resistance of the pressure-sensitive element 203 is relatively large, the amount of charge flowing through the pressure-sensitive element 203 and the second switch T2 is relatively small, and the amount of charge released by the liquid crystal capacitor Clc and the storage capacitor Cst is relatively small, so that the voltage on the pixel electrode 204 is relatively large, the deflection angle of the liquid crystal 202 is relatively large, and more light can pass through the second polarizer to enter the wide field of view, and the reduction in the display brightness of the pixel structure 2 at a position with a lower box thickness is relatively small, so that the brightness of the pixel structure 2 at a position with a higher box thickness is close to the brightness of the pixel structure 2 at a position with a lower box thickness, thereby improving the overall uniformity of the display brightness of the pixel structure 2.

[0063] When the normally white mode is displayed, the second switch T2 is a charging switch, and the common electrode charges the liquid crystal capacitor Clc and the storage capacitor Cst through the pressure-sensitive element 203 and the second switch T2, and the voltage of the pixel electrode 204 increases: when the pressure-sensitive element 203 is subjected to a large force, the resistance of the pressure-sensitive element 203 is small, and the amount of charge flowing through the pressure-sensitive element 203 and the second switch T2 is large. The amount of charge charged by the common electrode to the liquid crystal capacitor Clc and the storage capacitor Cst is large, so the voltage on the pixel electrode 204 is large, the deflection angle of the liquid crystal 202 is large, and less light can pass through the second polarizer to enter the wide field of view, and the display of the pixel structure 2 at a position with a higher box thickness is brighter. When the pressure sensing element 203 is subjected to a smaller force, the resistance of the pressure sensing element 203 is larger, the amount of charge flowing through the pressure sensing element 203 and the second switch T2 is smaller, and the amount of charge charged by the common electrode to the liquid crystal capacitor Clc and the storage capacitor Cst is smaller, so that the voltage on the pixel electrode 204 is smaller, the deflection angle of the liquid crystal 202 is smaller, and more light can pass through the second polarizer to enter the wide field of view. The display brightness of the pixel structure 2 at a position with a lower box thickness is reduced less, so that the brightness of the pixel structure 2 at a position with a higher box thickness is close to the brightness of the pixel structure 2 at a position with a lower box thickness, thereby improving the overall uniformity of the display brightness of the pixel structure 2.

[0064] It should be understood that the common electrode is insulated from the pixel electrode 204, wherein the common electrode can be connected to a common signal terminal Acom, and the common signal terminal Acom can provide a common voltage to the common electrode. The common voltage provided by the common signal terminal Acom can be kept constant, and the size of the common voltage is not specifically limited here.

[0065] In addition, in the embodiment of the present disclosure, the two electrodes forming the liquid crystal capacitor Clc and the storage capacitor Cst can be the pixel electrode 204 and the common electrode, but are not limited thereto. They can also be the pixel electrode 204 and other electrodes except the common electrode, depending on the actual situation.

[0066] Furthermore, the pixel structure 2 in the embodiment of the present disclosure may be provided with a plurality of supporting members 201. At the same time, one or more pressure sensing elements 203 abutting against the supporting members 201 may be provided in the pixel structure 2. One or more corresponding second switches T2 may also be provided in the pixel structure 2. For details, please refer to Embodiments 3 to 5.

[0067] Embodiment 3

[0068] A pressure-sensitive element 203 and a second switch T2 are provided in the pixel structure 2. The pressure-sensitive element 203 can be in contact with any support member 201 in the pixel structure 2. The pressure-sensitive element 203 is located on the connection line between the second switch T2 and the pixel electrode 204. The resistance of the pressure-sensitive element 203 changes according to the change in the magnitude of the pressure applied by the support member 201 in contact with it. As can be seen from the above, regardless of whether the pixel structure 2 is displayed in a normally white mode or a normally black mode, the greater the force applied to the pressure-sensitive element 203, the greater the reduction in the display brightness of the pixel structure 2, and the smaller the force applied to the pressure-sensitive element 203, the smaller the reduction in the display brightness of the pixel structure 2. As a result, the brightness of the pixel structure 2 at a higher position of the support member 201 approaches the brightness of the pixel structure 2 at a lower position of the support member 201, thereby improving the uniformity of the display brightness of the pixel structure 2.

[0069] Embodiment 4

[0070] A second switch T2 and a plurality of pressure-sensitive elements 203 are provided in the pixel structure 2, a plurality of support members 201 are provided around the pixel electrode 204, and at least some of the support members 201 have correspondingly provided pressure-sensitive elements 203, that is, the number of pressure-sensitive elements 203 in the pixel structure 2 is less than or equal to the number of support members 201, and one support member 201 is correspondingly in contact with one pressure-sensitive element 203, a plurality of pressure-sensitive elements 203 are provided in series, and are provided in the connection line between the second switch T2 and the pixel electrode 204, and in the pixel structure 2 A plurality of pressure sensing elements 203 are provided, and the heights of the supporting members 201 at a plurality of positions in the pixel structure 2 can be detected by the force applied to the pressure sensing elements 203. The second switch T2 discharges (or charges) the pixel electrode 204 based on the resistance values ​​of the pressure sensing elements 203 at different positions, thereby further enhancing the brightness compensation effect of the pixel structure 2, and making the brightness of the pixel structure 2 at a higher position of the supporting member 201 approach the brightness of the pixel structure 2 at a lower position of the supporting member 201, so as to improve the overall uniformity of the brightness displayed by the pixel structure 2.

[0071] Embodiment 5

[0072] A plurality of second switches T2 and a plurality of pressure-sensitive elements 203 are arranged in the pixel structure 2, a plurality of support members 201 are arranged around the pixel electrode 204, and at least some of the support members 201 have correspondingly arranged pressure-sensitive elements 203, that is: the number of pressure-sensitive elements 203 in the pixel structure 2 is less than or equal to the number of support members 201, and one support member 201 is correspondingly abutted against one pressure-sensitive element 203, a plurality of second switches T2 are connected in parallel, the second switches T2 and the pressure-sensitive elements 203 are arranged in one-to-one correspondence, and the pressure-sensitive elements 203 are arranged in the connection line between the second switch T2 and the pixel electrode 204, that is: one pressure-sensitive element 203 is correspondingly arranged in a connection line between a second switch T2 and the pixel electrode 204. A plurality of pressure sensing elements 203 are provided in the pixel structure 2, and the height of the support member 201 at a plurality of positions in the pixel structure 2 can be detected by the force applied to the pressure sensing elements 203. The second switch T2 discharges (or charges) the pixel electrode 204 based on the resistance values ​​of the pressure sensing elements 203 at different positions, thereby further enhancing the brightness compensation effect of the pixel structure 2, and making the brightness of the pixel structure 2 at a higher position of the support member 201 approach the brightness of the pixel structure 2 at a lower position of the support member 201, so as to improve the overall uniformity of the brightness displayed by the pixel structure 2. At the same time, multiple second switches T2 are connected in parallel, and the second switches T2 and the pressure-sensitive elements 203 are set one by one. Each pressure-sensitive element 203 is located in a connection line between a second switch T2 and a pixel electrode 204. The elements on each parallel connection line are independent of each other. Even if a device on a connection line is damaged or the connection line is broken, other connection lines are not disturbed and can still work normally. Therefore, through the cooperation between the pressure-sensitive elements 203 on other lines and the second switches T2, the display brightness of the pixel structure 2 can still be compensated, thereby improving the overall uniformity of the display brightness of the pixel structure 2.

[0073] It should be noted that the pixel structure 2 includes an opening area and a non-opening area. In the embodiment of the present disclosure, the pixel electrode 204 is located in the opening area, and the support member 201 can be arranged in the non-opening area to reduce the blocking of light by the support member 201, thereby improving the light transmittance of the pixel structure 2 and the display brightness of the pixel structure 2.

[0074] In addition, when a plurality of pressure-sensitive elements 203 are provided in the pixel structure 2, the pressure-sensitive elements 203 can be evenly arranged in the pixel structure 2 to reduce the situation where the pressure-sensitive elements 203 are all concentrated on detecting the height of the support member 201 located at a certain position of the pixel structure 2. For example, the pressure-sensitive elements 203 are concentrated on the positions where the height of the support member 201 in the pixel structure 2 is higher (or lower), and there is a lack of detection of the positions where the height of the support member 201 in the pixel structure 2 is lower (or higher), thereby reducing the occurrence of a situation where the overall display brightness of the pixel structure 2 decreases too much (or too little), thereby improving the overall uniformity of the display brightness of the pixel structure 2.

[0075] like Figure 5 As shown, an embodiment of the present disclosure provides a display panel 1, which includes a substrate 3 and a plurality of pixel structures 2 as described above, wherein the plurality of pixel structures 2 are formed on the substrate 3, data lines Data and scan lines Gate are arranged on the substrate 3, and the plurality of pixel structures 2 are connected through the scan lines Gate and the data lines Data.

[0076] In the embodiment of the present disclosure, a pressure-sensitive element 203, a first switch T1 and a second switch T2 are arranged in the pixel structure 2. The pressure-sensitive element 203 is arranged in the connection line between the pixel electrode 204 and the second switch T2, and the pressure-sensitive element 203 is in contact with the support member 201. By utilizing the negative correlation between the resistance of the pressure-sensitive element 203 and the pressure it receives, the higher the height of the support member 201, the greater the pressure of the support member 201 on the pressure-sensitive element 203, and the greater the resistance of the pressure-sensitive element 203. The second switch T2 can adjust the charge or discharge amount to the pixel electrode 204 according to the resistance of the pressure-sensitive element 203. When the pixel electrode 204 is in contact with the support member 201, the pressure of the pressure-sensitive element 203 is negatively correlated with the pressure it receives. When the pixel structure 2 is in the normally black mode, the second switch T2 is a leakage switch. When the pixel structure 2 is in the normally white mode, the second switch T2 is a charging switch. Under the cooperation of the pressure sensing element 203 and the second switch T2, the higher the support 201 is, the greater the reduction in the display brightness of the pixel structure 2 is, and the lower the support 201 is, the smaller the reduction in the display brightness of the pixel structure 2 is. As a result, the display brightness of the pixel structure 2 at a higher support 201 is close to the display brightness of the pixel structure 2 at a lower support 201, thereby improving the uniformity of the display brightness of the pixel structure 2. The display panel 1 is provided with a plurality of pixel structures 2 as described above on the substrate 3. Through the cooperation of the pressure sensing element 203 and the second switch T2, while improving the uniformity of the display brightness of each pixel structure 2, the uniformity of the display brightness of the display panel 1 can also be improved.

[0077] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the feature. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] It should be noted that "upper", "lower", "left", "right" and the like are only used for distinction to facilitate description, and do not impose any directional limitations on the embodiments of the present invention. For example, "upper" may actually be "lower", "left", "right" and other directions. In the present disclosure, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral whole; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and cannot be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present disclosure. Therefore, any changes or modifications made in accordance with the claims and specification of the present disclosure shall fall within the scope covered by the patent of the present disclosure.

Claims

1. A pixel structure, comprising a support member, wherein the support member is used to support a storage space for storing liquid crystal, and the pixel structure further comprises a pixel electrode, and a first switch and a second switch respectively connected to the pixel electrode, wherein: The pixel structure further includes: a pressure-sensitive element, the pressure-sensitive element being arranged in a connection line between the second switch and the pixel electrode, one end of the support member pressing against the pressure-sensitive element, the pressure-sensitive element decreasing in resistance value based on the pressure of the support member, and the charge flowing through the second switch increasing; Wherein, the second switch is used to charge or discharge the pixel electrode according to the height of the support member.

2. The pixel structure according to claim 1, characterized in that: The pressure sensing element is a piezoresistor.

3. The pixel structure according to claim 1, characterized in that: The second switch is provided with one, and the supporting member and the pressure-sensitive element are both provided with multiple ones. The multiple supporting members are arranged around the pixel electrode, and at least some of the supporting members are provided with the pressure-sensitive elements correspondingly. The multiple pressure-sensitive elements are arranged in series and are arranged in the connection line between the second switch and the pixel electrode.

4. The pixel structure according to claim 1, characterized in that: There are multiple second switches, support members and pressure-sensitive elements. The multiple support members are arranged around the pixel electrode, at least some of the support members are corresponding to the pressure-sensitive elements, the multiple second switches are connected in parallel, and the second switches and the pressure-sensitive elements are arranged one by one.

5. The pixel structure according to claim 1, characterized in that: The pixel structure also includes a first polarizer, a second polarizer and a liquid crystal layer. The absorption axes of the first polarizer and the second polarizer are parallel. The liquid crystal layer is arranged between the first polarizer and the second polarizer. Light enters the liquid crystal layer through the first polarizer and its polarization direction is twisted under the action of the liquid crystal. The pixel structure displays in a normally black mode. The first switch is a charging switch, and the second switch is a leakage switch. The charge of the pixel electrode is released through the second switch.

6. The pixel structure according to claim 1, characterized in that: The pixel structure also includes a first polarizer, a second polarizer and a liquid crystal layer. The absorption axes of the first polarizer and the second polarizer are orthogonal. The liquid crystal layer is arranged between the first polarizer and the second polarizer. Light enters the liquid crystal layer through the first polarizer and its polarization direction is twisted under the action of the liquid crystal. The pixel structure is displayed in a normally white mode. The first switch and the second switch are both charging switches. The charge of the pixel electrode is increased through the second switch.

7. The pixel structure according to claim 1, characterized in that: The second switch comprises: Gate; A gate insulating layer, located on a side of the gate electrode close to the pixel electrode, the gate insulating layer covers the gate electrode; A semiconductor, located at a side of the gate insulating layer away from the gate, and the semiconductor is arranged corresponding to the gate; The source and drain are located on a side of the gate insulating layer away from the gate, the source and drain are both connected to the semiconductor, the source and drain are spaced apart, and the source of the second switch is connected to the pressure sensing element.

8. The pixel structure according to claim 1, characterized in that: The pixel structure includes a color filter substrate, one end of the support member abuts against the color filter substrate, and the other end of the support member abuts against the pressure sensing element.

9. The pixel structure according to claim 1, characterized in that: The pixel structure includes a scan line, a data line, a common electrode, a liquid crystal capacitor and a storage capacitor. The liquid crystal capacitor comprises the common electrode and the pixel electrode which are arranged opposite to each other, and the electric field provided by the liquid crystal capacitor is used to control the deflection of the liquid crystal; The storage capacitor comprises the common electrode and the pixel electrode which are arranged opposite to each other, and the storage capacitor is used to supply power to the liquid crystal capacitor; The control end of the first switch is used to connect to the scan line, the first end of the first switch is used to connect to the data line, and the second end of the first switch is used to connect to the pixel electrode; The control end of the second switch is used to connect to the scan line, the first end of the second switch is used to connect to the pixel electrode, and the second end of the second switch is used to connect to the common electrode.

10. A display panel, characterized in that: The invention comprises a substrate and a plurality of pixel structures as claimed in any one of claims 1 to 9, wherein the plurality of pixel structures are formed on the substrate.

Images