WO2021142582A1 - 液晶面板及显示装置 - Google Patents
液晶面板及显示装置 Download PDFInfo
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- WO2021142582A1 WO2021142582A1 PCT/CN2020/071817 CN2020071817W WO2021142582A1 WO 2021142582 A1 WO2021142582 A1 WO 2021142582A1 CN 2020071817 W CN2020071817 W CN 2020071817W WO 2021142582 A1 WO2021142582 A1 WO 2021142582A1
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Definitions
- the embodiment of the present disclosure relates to a liquid crystal panel and a display device.
- the array substrate includes pixel electrodes and common electrodes located in different layers.
- one of the pixel electrode and the common electrode may have a plate-like structure, and the other of the pixel electrode and the common electrode may have a narrow structure. Slit-like structure.
- the embodiments of the present disclosure provide a liquid crystal panel and a display device, which can improve the phenomenon of light leakage in a dark state.
- An embodiment of the present disclosure provides a liquid crystal panel, which includes: a first substrate, which includes a first base substrate, and pixel electrodes and common electrodes on the first base substrate; and a second substrate that is connected to the The first substrate is opposed to and includes a second base substrate; and a liquid crystal layer located between the first substrate and the second substrate in a direction perpendicular to the first base substrate.
- the initial alignment of the liquid crystals in the liquid crystal layer is vertical alignment.
- the first substrate includes a first alignment layer on the first base substrate
- the second substrate includes a second alignment layer on the second base substrate
- the first alignment layer Both the second alignment layer and the second alignment layer are in direct contact with the liquid crystal layer, and the first alignment layer and the second alignment layer are configured such that the initial alignment of the liquid crystal is vertical alignment.
- the liquid crystal in the liquid crystal layer is a negative liquid crystal.
- the first substrate includes a first electrode layer and a second electrode layer sequentially located on the side of the first substrate substrate facing the liquid crystal layer, and the first electrode layer is perpendicular to the first substrate.
- the direction of the substrate is located between the first base substrate and the second electrode layer;
- the second electrode layer includes a plurality of second electrode strips spaced apart, one of the pixel electrode and the common electrode Is located in the second electrode layer and includes the plurality of second electrode strips;
- the other of the pixel electrode and the common electrode is located in the first electrode layer and is included in parallel to the first substrate
- the direction of the base substrate extends beyond the second electrode layer.
- the first electrode layer includes a continuous plate-shaped structure, and the orthographic projection of the plurality of second electrode strips on the first base substrate is located on the plate-shaped structure on the first base substrate Within the orthographic projection.
- the first electrode layer includes a plurality of first electrode strips spaced apart, the other of the pixel electrode and the common electrode includes the plurality of first electrode strips; the plurality of first electrodes
- the orthographic projection of the strips on the first base substrate partially overlaps the orthographic projections of the plurality of second electrode strips on the first base substrate.
- the first electrode layer includes a plurality of first electrode strips spaced apart, the other of the pixel electrode and the common electrode includes the plurality of first electrode strips; the plurality of first electrodes
- the orthographic projection of the strips on the first base substrate is outside the orthographic projection of the plurality of second electrode strips on the first base substrate.
- the second substrate further includes a first enhancement electrode located on the side of the second base substrate facing the liquid crystal layer; the first enhancement electrode is configured to interact with the pixel electrode and the pixel electrode during operation. A non-zero voltage difference is generated between at least one of the common electrodes.
- the first reinforcement electrode includes a continuous plate-shaped structure
- the orthographic projection of the plurality of second electrode strips on the first base substrate is located on the first reinforcement electrode of the plate-shaped structure on the first substrate.
- the first reinforcement electrode includes a plurality of third electrode strips spaced apart, and the orthographic projection of the plurality of third electrode strips on the first base substrate is in the same position as the plurality of second electrode strips.
- the orthographic projection on the first base substrate is staggered.
- the first enhancement electrode is configured to have a signal applied during operation that is different from a signal applied by the pixel electrode during operation and different from a signal applied by the common electrode during operation.
- the first enhancement electrode is electrically connected to the common electrode; or, the first enhancement electrode is electrically connected to the pixel electrode.
- the liquid crystal panel further includes a frame sealant that connects the first substrate and the second substrate, and a conductive connection portion is provided in the frame sealant, and the first reinforcement electrode passes through the conductive connection portion.
- the liquid crystal panel further includes a plurality of spacers located between the first substrate and the second substrate, and the first reinforcement electrode is at the most The pixel electrode or the common electrode is electrically connected to the position of the spacer near the edge of the liquid crystal panel.
- the width of the second electrode strips is 2.0-3.8 micrometers, and the distance between adjacent second electrode strips is 1.8-5.4 micrometers.
- the width of the second electrode strips is 1.9-3.3 micrometers, and the distance between adjacent second electrode strips is 2.3-4.8 micrometers.
- the first substrate further includes an insulating layer located between the first electrode layer and the second electrode layer in a direction perpendicular to the first base substrate, and the insulating layer has a thickness of 100 ⁇ 2000 nm.
- the pixel electrode and the common electrode are located in the same layer; the second substrate further includes a first enhancement electrode on the side of the second base substrate facing the liquid crystal layer; the first enhancement electrode It is configured to generate a non-zero voltage difference with at least one of the pixel electrode and the common electrode during operation.
- the second substrate further includes a second reinforcement electrode located on the second base substrate and insulated from the first reinforcement electrode, and the first reinforcement electrode and the second reinforcement electrode are configured to operate during operation. Different signals are applied.
- one of the first reinforcement electrode and the second reinforcement electrode is electrically connected to the pixel electrode, and the other of the first reinforcement electrode and the second reinforcement electrode is electrically connected to the common electrode .
- An embodiment of the present disclosure provides a display device, which includes the liquid crystal panel described in any one of the above embodiments and a backlight, where the backlight is located on a side of the first substrate away from the second substrate.
- FIG. 1 is a schematic diagram of the structure of a horizontal electric field type ADS liquid crystal panel.
- FIGS. 2A to 3G are schematic diagrams of liquid crystal panels provided by embodiments of the disclosure.
- FIG. 4 is a comparison diagram of V-T curves when the thickness of an insulating layer is different according to an embodiment of the disclosure.
- FIG. 5 is a schematic diagram of a domain structure in a liquid crystal panel provided by an embodiment of the disclosure.
- FIG. 6 is a schematic diagram of director distribution of the liquid crystal panel provided by an embodiment of the disclosure when the first enhancement electrode is included and under different electric fields.
- FIG. 7 is a comparison diagram of V-T curves when the first reinforcement electrode in the liquid crystal panel provided by the embodiment of the disclosure adopts different structures.
- FIG. 8A is a schematic diagram of the first electrode signal line and the second electrode signal line being electrically connected at the sealant according to an embodiment of the present disclosure.
- FIG. 8B is a schematic diagram of the electrical connection between the first electrode signal line and the second electrode signal line provided by the embodiment of the disclosure at the spacer.
- FIG. 9A is a comparison diagram of V-T curves of the liquid crystal panel as shown in FIGS. 2B-2D when the second electrode strips have the same width and the second electrode strips have different distances.
- Fig. 9B shows the transmittance of the liquid crystal panel shown in Figs. 2B-2D when the width of the second electrode strips and the distance between the second electrode strips are different.
- FIG. 9C shows the transmittance of the liquid crystal panel shown in FIGS. 3B-3G when the width of the second electrode strips and the distance between the second electrode strips are different.
- FIG. 10A is a diagram of the phase difference-transmittance relationship of the liquid crystal panel shown in FIGS. 2B-2D provided by an embodiment of the disclosure.
- FIGS. 3B-3G are diagrams of the phase difference-transmittance relationship of the liquid crystal panel shown in FIGS. 3B-3G provided by an embodiment of the disclosure.
- FIG. 11 is a simulated comparison diagram of the V-T curve of the liquid crystal panel shown in FIG. 1 and the liquid crystal panel shown in FIG. 3B.
- FIG. 12A is a comparison diagram of the transmittance of the liquid crystal panel shown in FIG. 1 and that of the liquid crystal panel shown in FIG. 3B in the dark state affected by the deviation of the optical axis of the polarizer.
- FIG. 12B is a comparison diagram of the transmittance of the liquid crystal panel shown in FIG. 1 and that of the liquid crystal panel shown in FIG. 3B in the dark state affected by the deviation of the pretilt angle of the alignment layer.
- FIG. 13A to 13C are viewing angle characteristic diagrams when the first electrode layer includes a common electrode and the second electrode layer includes a pixel electrode when the liquid crystal panel shown in FIG. 3B is provided by an embodiment of the disclosure.
- FIG. 14 is a Gamma characteristic diagram of the liquid crystal panel shown in FIG. 3B provided by an embodiment of the disclosure when the first electrode layer includes a common electrode and the second electrode layer includes a pixel electrode.
- FIG. 15 is a schematic diagram of a display device provided by an embodiment of the disclosure.
- FIG. 1 is a schematic diagram of the structure of a horizontal electric field type ADS liquid crystal panel.
- the ADS liquid crystal panel includes a lower substrate LS and an upper substrate US opposed to each other and includes a liquid crystal layer LC located between the two substrates.
- the lower substrate LS includes a base substrate BS1 and a common electrode ET1 and a pixel electrode ET2 located thereon.
- the common electrode ET1 has a plate shape and the pixel electrode ET2 has a strip shape.
- the liquid crystal layer LC in the ADS type liquid crystal panel shown in FIG. 1 uses positive liquid crystals.
- the orientation direction of the liquid crystal is approximately parallel to the upper substrate US and the lower substrate LS, and the orientation direction of the liquid crystal (that is, the direction of the long axis of the liquid crystal) It is substantially parallel to the extending direction of the strip-shaped pixel electrode.
- the electric field is turned on, the direction of the electric field is directed from the upper stripe pixel electrode ET2 to the lower common electrode ET1, that is, the direction of the electric field is perpendicular to the extension direction of the stripe pixel electrode ET2; at this time, the liquid crystal is electropositive (dielectric anisotropy). Coefficient ⁇ >0) and rotate to be aligned in the direction of the electric field, resulting in in-plane rotation.
- the inventor of the present application noticed that in the zero electric field, due to the deviation of the optical axis of the liquid crystal (that is, the deviation between the actual angle of the long axis direction of the liquid crystal and the designed angle), the ordinary light (O light) and The deviation of the optical path difference between the extraordinary light (E light) and the deviation of the optical axis of the polarizer, etc., the ADS liquid crystal display device shown in Figure 1 has light leakage in the dark state, which causes the ADS liquid crystal display device to be dark The brightness (L0) in the state is large, so the contrast is not high.
- the embodiments of the present disclosure provide a liquid crystal panel and a display device including the liquid crystal panel.
- the liquid crystal panel includes a first substrate and a second substrate opposite to each other, and a liquid crystal layer sandwiched between the two substrates.
- the first substrate includes a pixel electrode and a common electrode for forming a horizontal electric field, and the initial orientation of the liquid crystal in the liquid crystal layer is vertical alignment (that is, when no electric field is formed between the pixel electrode and the common electrode, most of the liquid crystal layer
- the long axis direction of the liquid crystal molecules is approximately perpendicular to the first substrate and the second substrate).
- the orientation direction of the liquid crystal in the liquid crystal layer in the initial state (that is, the zero electric field state, which also means that the voltage difference between the pixel electrode and the common electrode (that is, the driving voltage) is 0) is substantially perpendicular to the substrate (The first substrate and the second substrate), for example, the pretilt angle of the liquid crystal molecules (the angle between the long axis direction of the liquid crystal molecules and the surface of the substrate) ranges approximately from 87° to 93°.
- the refractive index of the liquid crystal in the optical axis direction of the two polarizers is no (that is, the refractive index of O light).
- the liquid crystal is not sensitive to the deviation of the optical axis of the polarizer.
- the liquid crystal panel provided by the embodiments of the present disclosure can improve the light leakage in the dark state, thereby increasing the contrast.
- PSVA Poly Stabilized Vertivally Aligned
- PSVA Poly Stabilized Vertivally Aligned
- an alignment layer may be used to realize the initial alignment of the liquid crystal to be vertical alignment.
- the first substrate includes a first alignment layer on a first base substrate
- the second substrate includes a second alignment layer on a second base substrate. Both the first alignment layer and the second alignment layer are directly connected to the liquid crystal layer. Contact, and the first alignment layer and the second alignment layer are configured so that the initial alignment of the liquid crystal is vertical alignment.
- the first alignment layer and the second alignment layer do not need to be combined with polymerizable monomers, a complicated alignment process similar to the aforementioned PSVA technology is omitted.
- the orientation direction of the liquid crystal is not affected by the deviation between the orientation directions of the first and second alignment layers. Therefore, it is possible to improve the darkness under the premise of simplifying the alignment process. Light leaks to improve contrast.
- the material used to form the first alignment layer and the second alignment layer is polyimide or the like.
- polyimide materials mainly include two types. One type of polyimide structure can cause the liquid crystal to be horizontally aligned, and the other type of polyimide structure can cause the liquid crystal to be vertically aligned. In the embodiment of the present disclosure, a polyimide material or similar material that can cause the liquid crystal to be vertically aligned is selected.
- the first alignment layer and the second alignment layer are alignment layers that have undergone alignment treatment, such as rubbing alignment or photo alignment.
- the alignment layer after the alignment treatment can make the liquid crystal molecules directly in contact with the alignment layer have a non-zero pretilt angle, which is beneficial to improve the uniformity of the deflection of the liquid crystal under a non-zero electric field to reduce defects.
- the rubbing orientation includes: coating the slurry for forming the alignment layer on the corresponding base substrate and pre-curing to form a film material (such as a polyimide film material), and then performing post-baking to completely cure the The film material is then rubbed into grooves along the prescribed direction on the surface of the cured film material.
- a film material such as a polyimide film material
- photo-orientation includes: coating a slurry for forming an alignment layer on a corresponding base substrate and pre-curing to form a film material (for example, a polyimide film material), and then placing the film material in, for example, Polarized ultraviolet light is irradiated to form an orientation direction, and then post bake is performed to completely cure the film.
- a film material for example, a polyimide film material
- the rubbing orientation does not require the film material to be irradiated under polarized ultraviolet light, the rubbing orientation is preferred to simplify the process.
- the liquid crystal panel provided by the embodiment of the present disclosure includes a first substrate S1, a second substrate S2, and a liquid crystal layer LC.
- the first substrate S1 includes a first base substrate BS1, and a pixel electrode PE, a common electrode CE, and a first alignment layer AL1 on the first base substrate BS1.
- the pixel electrode PE and the common electrode CE are perpendicular to the first base substrate.
- the direction of BS1 (the direction is perpendicular to the surface of the first base substrate BS1 facing the liquid crystal layer LC) is located between the first base substrate BS1 and the first alignment layer AL1; the second substrate S2 is opposite to the first substrate S1 and It includes a second base substrate BS2 and a second alignment layer AL2 located on the second base substrate BS2; the liquid crystal layer LC is located between the first substrate S1 and the second substrate S2 in a direction perpendicular to the first base substrate BS1 ,
- the first alignment layer AL1 and the second alignment layer AL2 are in a vertical alignment mode.
- the liquid crystal in the liquid crystal layer LC is a negative liquid crystal, that is, the dielectric anisotropy coefficient of the liquid crystal ⁇ 0, which is beneficial to improve the light efficiency.
- a negative liquid crystal with a larger absolute value of the dielectric anisotropy coefficient for example, choose a negative liquid crystal with ⁇ less than or equal to -5.8, for example, choose a negative liquid crystal with ⁇ of -6.5 or -7.8.
- a liquid crystal with a larger birefringence coefficient ⁇ n is selected, for example, ⁇ n is greater than or equal to 0.114, for example, ⁇ n is 0.13.
- the viscosity of the liquid crystal should be as small as possible.
- the first substrate S1 further includes a first polarizer POL1 located on the side of the first base substrate BS1 away from the liquid crystal layer LC
- the second substrate S2 further includes a first polarizer POL1 located on the side of the second base substrate BS2 away from the liquid crystal layer LC.
- the optical axis directions of the second polarizer POL2, the first polarizer POL1 and the second polarizer POL2 are substantially perpendicular.
- the design value of the angle between the optical axis directions of the first polarizer POL1 and the second polarizer POL2 is 90°.
- the first polarizer POL1 and the second polarizer POL1 The design value of the angle between the optical axis directions of POL2 may slightly deviate from 90°, that is, the optical axis directions of the first polarizer POL1 and the second polarizer POL2 are approximately perpendicular, and satisfy the sandwich between the optical axis directions.
- the deviation between the design value and the actual value of the angle is within the allowable range of error.
- the second substrate S2 may include a combined structure CFBM of a color filter layer and a black matrix.
- the color filter layer includes a plurality of filter patterns (for example, including a red filter pattern, a green filter pattern, and a blue filter pattern) spaced apart, and a black matrix is located between these filter patterns In the gap.
- the display panel may further include a cover plate CG for protection.
- the cover plate CG is connected to the second substrate S2 through the second polarizer POL.
- the first substrate S1 in the liquid crystal panel further includes a switching element electrically connected to the pixel electrode PE, and a passivation insulating layer PVX located on the side of the switching element away from the first base substrate BS1 (as shown in FIG. 2C and Shown in Figure 2D).
- the switching element is a thin film transistor or another type of switch.
- a thin film transistor includes a gate, an active layer, and a source and a drain electrically connected to the active layer. The gate and the active layer are separated by a gate insulating layer (see GI in FIG. 2C and FIG. 2D).
- semiconductor materials such as amorphous silicon or metal oxide can be selected.
- the liquid crystal panel may be a transmissive liquid crystal panel.
- the material of the pixel electrode PE and the common electrode CE included in the first substrate S1 is a transparent conductive material, for example, the transparent conductive material may be a transparent conductive oxide, for example, indium tin oxide, indium gallium zinc oxide, oxide Indium zinc and so on.
- the pixel electrode PE and the common electrode CE are located in the same layer.
- the pixel electrode PE and the common electrode CE are located side by side on the surface of the same layer (for example, the passivation insulating layer PVX), and directly contact the surface.
- the pixel electrode PE has a plurality of pixel electrode strips spaced apart
- the common electrode CE has a plurality of common electrode strips spaced apart, and the pixel electrode strips and the common electrode strips are alternately arranged.
- the pixel electrode PE and the common electrode CE are located in different layers.
- the first substrate S1 includes a first electrode layer E1 and a second electrode layer E2 that are sequentially located on the side of the first base substrate BS1 facing the liquid crystal layer LC.
- the second electrode layer E2 includes a plurality of second electrode strips ES2 that are spaced apart and electrically connected to each other,
- One of the pixel electrode PE and the common electrode CE is located in the second electrode layer E2 and includes the second electrode strip ES2; the other of the pixel electrode PE and the common electrode CE is located in the first electrode layer E1 and is included in the first electrode layer E1.
- the direction of the base substrate BS1 extends beyond the portion of the second electrode strip ES2, so that an electric field is formed between the pixel electrode PE and the common electrode CE.
- the LCD panel shown in Figures 2B-2D and 3B-3G uses Advanced Super Dimension Switch (ADS) technology, so that the LCD panel has the high resolution, high transmittance, and low transmittance of ADS technology. Power consumption, wide viewing angle, high aperture ratio, low chromatic aberration and other advantages.
- ADS Advanced Super Dimension Switch
- the first electrode layer E1 includes a common electrode CE and the second electrode layer E2 includes a pixel electrode PE having a plurality of second electrode strips ES2 as an example. instruction.
- the first electrode layer E1 includes the pixel electrode PE and the second electrode layer E2 includes the common electrode CE having a plurality of second electrode strips ES2.
- the first electrode layer E1 may include a plate-like structure (ie, the plate
- the common electrode CE (or the pixel electrode PE with the plate structure) does not have an opening through the plate structure, that is, one of the pixel electrode PE and the common electrode CE has a plurality of second electrode strips and the other One has a plate-like structure. In this case, as shown in FIGS.
- the first electrode layer E1 includes a continuous plate-like structure, and the orthographic projection of the second electrode strip ES2 on the first base substrate BS1 is located on this The plate-like structure is in an orthographic projection on the first base substrate BS1.
- One of the pixel electrode PE and the common electrode CE includes a plurality of second electrode strips ES2 and the other has a plate-shaped structure, which is beneficial to increase the storage capacitance.
- the first electrode layer E1 may include a plurality of first electrode strips ES2.
- the common electrode CE (or the pixel electrode PE having a plurality of first electrode strips), that is, both the pixel electrode PE and the common electrode CE have a plurality of electrode strips. For example, as shown in FIGS.
- the first electrode layer E1 includes a plurality of first electrode strips ES1 spaced apart (the plurality of first electrode strips ES1 are electrically connected to each other), and the second electrode layer E2 includes spaced apart
- the common electrode CE is located in the first electrode layer E1 and includes the first electrode stripes ES1
- the pixel electrode PE is located in the second electrode layer E2 and includes the second electrode stripes ES2.
- the pixel electrode PE may be located in the first electrode layer E1 and include the first electrode strip ES1
- the common electrode CE may be located in the second electrode layer E2 and include the second electrode strip ES2.
- the orthographic projection of the first electrode strip ES1 on the first base substrate BS1 and the orthographic projection of the second electrode strip ES2 on the first base substrate BS1 are only Partially overlapped.
- the orthographic projection of the first electrode strip ES1 on the first base substrate BS1 and the orthographic projection of the second electrode strip ES2 on the first base substrate BS1 do not overlap. That is, the orthographic projection of the first electrode strip ES1 on the first base substrate BS1 is outside the orthographic projection of the second electrode strip ES2 on the first base substrate BS1.
- the first substrate S1 is also It includes an insulating layer IL located between the first electrode layer E1 and the second electrode layer E2 in a direction perpendicular to the first base substrate BS1, that is, the first electrode layer E1 is located on the insulating layer IL facing the first liner.
- One side of the base substrate BS1 and the second electrode layer E2 are located on the side of the insulating layer IL away from the first base substrate BS1.
- the insulating layer IL separating the first electrode layer E1 and the second electrode layer E2 may have a single-layer film structure, as shown in FIGS. 2B, 2D, and 3B-3F.
- the insulating layer IL having a single-layer film structure is a passivation insulating layer PVX.
- the insulating layer IL may have a multilayer film structure, as shown in FIG. 2C.
- the insulating layer IL with a multilayer film structure includes a gate insulating layer GI and a passivation insulating layer PVX on the side of the gate insulating layer GI away from the first base substrate BS1.
- the insulating layer IL may also include other insulating films, which will not be repeated here.
- the thickness of the insulating layer IL separating the first electrode layer E1 and the second electrode layer E2 can be set to 100-2000 nm, such as 100-700 nm, such as 100-400 nm, preferably the smallest value within the process allowable range, Such as 100nm, 150nm, 200nm, 250nm or 300nm.
- FIG. 4 is a comparison diagram of V-T curves when the thickness of the insulating layer is different according to an embodiment of the disclosure, wherein the voltage in FIG. 4 represents the voltage of the pixel electrode when the voltage of the common electrode is 0V.
- the V-T curves driving voltage-transmittance curves
- the thinner insulating layer IL is beneficial to reduce the driving voltage of the liquid crystal panel and increase the transmittance of the liquid crystal panel.
- the passivation insulating layer PVX is an inorganic insulating layer, which includes, for example, one or a combination of inorganic thin films such as a silicon dioxide film, a silicon nitride film, and a silicon oxynitride film.
- the pixel electrode PE includes a plurality of pixel electrode strips (an example of the second electrode strip ES2) can be set as single domain, double domain, four domain, or eight domain, etc.
- the domain here refers to the number of extension directions of the pixel electrode strips in the same sub-pixel among the multiple sub-pixels included in the liquid crystal panel.
- the pixel electrode strips included in the pixel electrode PE all extend in the same direction, that is, the pixel electrode PE adopts a single domain structure.
- the angle ⁇ between the pixel electrode strips in adjacent domains may be 10-14° or 90°, as shown in FIG. 5 As shown in (b) ⁇ (d).
- different sub-pixels may have different domain structures. For example, a manner in which 2 sub-pixels form 4 domains can be used.
- the pixel electrode in the same sub-pixel has two domains (for example, for these two domains, the extension direction of the pixel electrode strip in one domain is the same as that of the other domain.
- the extension direction of the middle pixel electrode strips is symmetrical).
- the extension direction of the pixel electrode strips in the domain of one sub-pixel is symmetrical with the extension direction of the pixel electrode strips in the domain of the other sub-pixel (see ( e)); or, for two adjacent sub-pixels in the column direction, the extension direction of the pixel electrode strips in the domain of one sub-pixel is symmetrical with the extension direction of the pixel electrode strips in the domain of the other sub-pixel (see (F) in Figure 5).
- the initial state of the liquid crystal remains unchanged, and the liquid crystal molecules (see the elliptical structure in the figure) are arranged in a direction perpendicular to the first substrate and the second substrate; when a driving voltage is applied, the liquid crystal deflects to They are arranged parallel to the direction of the first substrate and the second substrate, and are mainly arranged along the extending direction of the pixel electrode strips in the horizontal plane.
- the liquid crystal molecules see the elliptical structure in the figure
- the initial orientation of the liquid crystal is roughly perpendicular to the substrates (first substrate S1 and second substrate S2); under the action of the electric field, the arrangement of liquid crystal molecules is as follows: In the area of the liquid crystal layer close to each substrate, due to the strong anchoring effect of the alignment layer included in the substrate, the state of the liquid crystal perpendicular to the substrate is difficult to change.
- the electric field is not enough to deflect the liquid crystal, but due to the The size of the area where the liquid crystal cannot be deflected due to the strong anchoring effect is small, so its influence can be ignored; in the middle action area of the liquid crystal layer, the electric field is directed from the pixel electrode to the common electrode, and the negative liquid crystal is deflected under the action of the electric field, and Deflection to be aligned parallel to the direction of the substrate.
- the second substrate S2 further includes a first reinforcement electrode E3 on the side of the second base substrate BS2 facing the liquid crystal layer LC, and the first reinforcement electrode E3 is perpendicular to the first substrate.
- the base substrate BS1 is located between the second base substrate BS2 and the second alignment layer AL2 in the direction; the first enhancement electrode E3 is configured to generate a non-zero value between at least one of the pixel electrode PE and the common electrode CE during operation.
- the voltage difference, that is, during operation, at least one of the pixel electrode PE and the common electrode CE forms a vertical electric field with the first enhancement electrode E3.
- the first enhancement electrode E3 may only generate a non-zero voltage difference with the pixel electrode PE; or, the first enhancement electrode E3 may only generate a non-zero voltage difference with the common electrode CE; or, the first enhancement electrode E3 may only generate a non-zero voltage difference with the common electrode CE; The enhancement electrode E3 may generate a non-zero voltage difference with each of the pixel electrode PE and the common electrode CE.
- a vertical electric field is also generated by at least one of the pixel electrode PE and the common electrode CE and the first enhancement electrode E3. .
- FIG. 6 is a schematic diagram of director distribution of the liquid crystal panel provided by an embodiment of the disclosure when the first enhancement electrode is included and under different electric fields.
- the first substrate since the first substrate includes a horizontal electric field between the pixel electrode and the common electrode, there is a vertical electric field between the first enhancement electrode and the pixel electrode, and The vertical electric field is directed from the pixel electrode included in the first substrate to the first enhancement electrode included in the second substrate.
- the negative liquid crystal is deflected under the action of the vertical electric field, and is deflected to be aligned in a direction parallel to the substrate. It can be seen that in the mode of the liquid crystal panel including the first enhancement electrode, due to the introduction of the vertical electric field, some liquid crystal molecules that did not rotate to the ideal state under the original horizontal electric field are also deflected, which improves the light transmittance to a certain extent. , Thereby improving the light efficiency of the liquid crystal.
- the first reinforcement electrode E3 includes a continuous plate-like structure.
- the orthographic projection of the plurality of second electrode strips ES2 included in the second electrode layer E2 on the first base substrate BS1 is located on the first reinforcing electrode E3 of the plate-like structure on the first base substrate BS1 Within the orthographic projection.
- the first reinforcement electrode E3 may also include a plurality of electrode strips.
- the first reinforcement electrode E3 includes a plurality of third electrode strips ES3 spaced apart and electrically connected to each other. By making the first reinforcement electrode E3 include a plurality of third electrode strips ES3, it is beneficial to increase the transmittance.
- the orthographic projection of the plurality of third electrode strips ES3 included in the first reinforcement electrode E3 on the first base substrate BS1 and the projection of the plurality of second electrode strips ES2 on the first base substrate BS1 The orthographic projections are completely coincident, that is, the third electrode strip ES3 does not have a portion beyond the second electrode strip ES2 and the second electrode strip ES2 does not have a portion beyond the third electrode strip ES3.
- the orthographic projection on BS1 is staggered, that is, the orthographic projection of the third electrode strip ES3 on the first base substrate BS1 and the orthographic projection of the second electrode strip ES2 on the first base substrate BS1 may only partially overlap ( That is, the orthographic projection includes overlapping parts and non-overlapping parts) or non-overlapping.
- FIG. 7 is a comparison diagram of V-T curves when the first enhancement electrode in the liquid crystal panel according to an embodiment of the disclosure adopts different structures, where the "voltage” is the voltage of the pixel electrode when the common electrode is 0V.
- plate structure means that the first reinforcement electrode is a plate structure
- completely overlap means that the first reinforcement electrode E3 includes the orthographic projection of the third electrode strip ES3 and the orthographic projection of the second electrode strip ES2.
- Stggered means that the orthographic projection of the third electrode strip ES3 included in the first reinforcement electrode E3 is staggered from the orthographic projection of the second electrode strip ES2. It can be seen from FIG.
- L255 includes a plurality of third electrode strips ES3 (ie, the third electrode strip and the second electrode When the strips are completely overlapped or staggered), the maximum transmittance is greater than when the first reinforcing electrode E3 has a plate-like structure; and, when the orthographic projection of the third electrode strip ES3 and the orthographic projection of the second electrode strip ES2 are staggered, the maximum transmittance is higher than that of the third It is large when the orthographic projection of the electrode strip ES3 and the orthographic projection of the second electrode strip ES2 completely coincide.
- the first enhancement electrode E3 is configured to be applied with a constant signal (that is, the magnitude and electrical properties of the signal remain unchanged) or a changing signal (that is, at least one of the magnitude and electrical properties of the signal changes with time) during operation. .
- the electrode included in the second electrode layer E2 and the first enhancement electrode E3 are applied with the same signal (for example, the same changing signal or the same constant signal) during operation.
- the first enhancement electrode E3 The electrode E3 and the electrode included in the first electrode layer E1 have different signals applied during operation, so that a vertical electric field is generated between the first enhanced electrode E3 and the electrode included in the first electrode layer E1.
- the electrodes included in the second electrode layer E2 and the first enhancement electrode E3 work together.
- different signals are applied.
- one of the electrodes included in the first enhanced electrode E3 and the second electrode layer E2 is applied with a constant signal and the other is applied with a varying signal; or, the electrodes included in the first enhanced electrode E3 and the second electrode layer E2 are both applied with different
- the electrodes included in the first enhanced electrode E3 and the second electrode layer E2 are both applied with different changing signals.
- the first enhanced electrode E3 and the electrodes included in the first electrode layer E1 may be applied with the same signal during operation. Or different.
- the first electrode layer E1 includes a common electrode CE
- the second electrode layer E2 includes a pixel electrode PE
- the first enhancement electrode E3 serves as another common electrode (that is, the first enhancement electrode E3 is configured to be applied with a constant signal during operation)
- the other common electrode and the common electrode CE are applied with different signals or the same signal
- the first electrode layer E1 includes the pixel electrode PE
- the second electrode layer E2 includes the common electrode CE
- the first enhancement electrode E3 As another pixel electrode (that is, the first enhancement electrode E3 is configured to be applied with a change signal similar to the pixel electrode signal during operation)
- the other pixel electrode and the pixel electrode PE are applied with different signals (for example, the different The signal is a signal with opposite positive and negative frames, for example, the electrical properties are opposite at the same time) or the same signal
- the first electrode layer E1 includes the common electrode CE
- the second electrode layer E2 includes the pixel electrode PE
- the first enhancement electrode E3 As another pixel electrode, and the other pixel electrode
- the first enhancement electrode E3 is configured such that the signal applied during operation is different from the signal applied during operation of the pixel electrode PE and different from the signal applied during operation of the common electrode CE.
- a vertical electric field can be generated between the first reinforcing electrode E3 and the electrodes included in the second electrode layer E2 and a vertical electric field can be generated between the electrodes included in the first electrode layer E1, so as to obtain a stronger vertical electric field.
- the same signal in the embodiments of the present disclosure means that the signal has the same size and electrical properties at any time, and the different signal means that at least one of the size and electrical properties of the signal at least part of the time is different.
- the different signals are different constant signals or different changing signals.
- the different constant signals may all be positive electrical signals but different in magnitude; or, the different constant signals may all be negative electrical signals but different in magnitude; or, the different constant signals may be signals with opposite electrical properties; or, One of the different constant signals is a 0V voltage signal and the other is a non-zero voltage signal.
- the different change signals may be positive electrical signals but different magnitudes at the same time; or, the different change signals may be negative electrical signals but different magnitudes at the same time; or, the different change signals may be at the same time It may be a signal with opposite electrical properties; or, at the same time, one of the different changing electrode signals is a 0V voltage signal and the other is a non-zero voltage signal.
- the signal applied to the pixel electrode PE is a change signal; the signal applied to the common electrode CE may be a constant signal, or a change signal with a constant magnitude but electrical changes.
- the first reinforcement electrode E3 is electrically connected to the common electrode CE.
- the first enhancement electrode E3 and the common electrode CE are applied with the same signal (for example, a low potential signal of the same magnitude, for example, a voltage of 0V).
- the first reinforcement electrode E3 is electrically connected to the common electrode CE included in the first electrode layer E1.
- the first enhancement electrode E3 is electrically connected to the pixel electrode PE.
- the second electrode layer E2 includes the common electrode CE (that is, the common electrode CE is closer to the first enhancement electrode E3 than the pixel electrode PE)
- the first enhancement electrode E3 is electrically connected to the pixel electrode PE included in the first electrode layer E1.
- the liquid crystal panel includes a display area and a frame area between the display area and the edge of the liquid crystal panel (that is, the frame area is outside the display area).
- the frame area is provided with a sealant connecting the first substrate and the second substrate.
- the liquid crystal panel also includes a plurality of spacers for maintaining the cell thickness of the liquid crystal panel, most of the plurality of spacers are located in the non-opening area of the display area, and the plurality of spacers are adjacent to the frame sealant Part is located in the border area.
- the first enhancement electrode E3 and the pixel electrode PE or the common electrode CE may be electrically connected in the frame area to avoid affecting the display effect.
- the first enhancement electrode E3 and the pixel electrode PE or the common electrode CE may be electrically connected at the position of the sealant or spacer in the frame area.
- the liquid crystal panel provided by some embodiments of the present disclosure further includes a frame sealant SF connecting the first substrate S1 and the second substrate S2, and the frame sealant SF is provided with a conductive connection portion C (such as a golden ball Or other types of conductors), the first enhancement electrode E3 and the pixel electrode PE or the common electrode CE are electrically connected through the conductive connection portion C.
- the conductive connection portion C is electrically connected to the first electrode signal line EL1 included in the first substrate S1
- the first electrode signal line EL1 is electrically connected to the pixel electrode or the common electrode included in the first substrate S1 (in FIG.
- the conductive connecting portion C is also electrically connected to the second electrode signal line EL2 included in the second substrate S2, and the second electrode signal line EL2 is electrically connected to the first enhancement electrode (not shown in FIG. 8A).
- the electrical connection between the first enhancement electrode E3 and the pixel electrode PE or the common electrode CE can be achieved through the conductive connection portion C, the first electrode signal line EL1 and the second electrode signal line EL2.
- arranging the conductive connecting portion C between the inner edge and the outer edge of the frame sealant SF can avoid increasing the frame of the liquid crystal panel.
- the height of the conductive connection portion C in the arrangement direction of the first substrate S1 and the second substrate S2 is approximately equal to the height of the frame sealant SF, so that the conductive connection portion C can maintain the thickness of the liquid crystal panel. The role of.
- the liquid crystal panel provided by other embodiments of the present disclosure further includes a plurality of spacers S between the first substrate S1 and the second substrate S2 (only one spacer is shown in FIG. 8B).
- S is an example
- the first enhancement electrode E3 and the pixel electrode PE or the common electrode CE are electrically connected at the position of the spacer S closest to the edge of the liquid crystal panel.
- the spacer S closest to the edge of the liquid crystal panel is the outermost spacer among the plurality of spacers included in the liquid crystal panel, for example, the outermost spacer is located in the frame area.
- the spacer S is located between the second electrode signal line EL2 included in the second substrate S2 and the second base substrate (not shown in FIG. 8B), and the second electrode signal line EL2 is electrically connected to the second substrate S2.
- An enhanced electrode (not shown in FIG. 8B)
- the second electrode signal line EL2 is electrically connected (for example, directly contacting) the first electrode signal line EL1 at the location of the spacer S
- the first electrode signal line EL1 is electrically connected to the first electrode signal line EL1.
- a substrate S1 includes a pixel electrode or a common electrode (not shown in FIG. 8A), so that the first enhancement can be achieved by electrically connecting the first electrode signal line EL1 and the second electrode signal line EL2 at the position of the spacer S The electrical connection between the electrode E3 and the pixel electrode PE or the common electrode CE.
- the second substrate S2 further includes a second reinforcement electrode E4 located on the second base substrate BS2 and electrically insulated from the first reinforcement electrode E3, and the first reinforcement electrode E3 and the second reinforcement electrode E3 Different signals are applied to the two enhancement electrodes E4.
- one of the first enhancement electrode E3 and the second enhancement electrode E4 is a pixel electrode, and the pixel electrode and the pixel electrode PE may be applied with the same signal or different signals; the other of the first enhancement electrode E3 and the second enhancement electrode E4 It is a common electrode, and the common electrode and the common electrode CE can be applied with the same signal or different signals.
- the different signals may be different constant signals, or different changing signals, or respectively constant signals and changing signals.
- the second enhanced electrode E4 also includes a plurality of electrode strips electrically connected to each other, and the plurality of electrode strips and the plurality of third electrode strips ES3 included in the first enhanced electrode E3 are located in the same layer and Alternate arrangement, which can simplify the manufacturing process of the first enhanced electrode E3 and the second enhanced electrode E4.
- one of the first enhancement electrode E3 and the second enhancement electrode E4 is electrically connected to the pixel electrode PE, and the other of the first enhancement electrode E3 and the second enhancement electrode E4 is electrically connected to the common electrode CE. This helps simplify wiring and signal control.
- the material of the first reinforcement electrode E3 included in the second substrate S2 is a transparent conductive material.
- the material of the second reinforcement electrode E4 is also a transparent conductive material.
- the transparent conductive material may be a transparent conductive oxide, such as indium tin oxide, indium gallium zinc oxide, indium zinc oxide, and the like.
- the pixel electrode PE and the common electrode CE are located in different layers and both include a plurality of electrode strips.
- the second substrate S2 may also include the first enhancement electrode E3 and the second enhancement electrode E4;
- the second substrate S2 may also include the first enhancement electrode E3 and the second enhancement electrode E4.
- the liquid crystal panel shown in FIGS. 2B-2D does not include an enhanced electrode for forming a vertical electric field with the pixel electrode and/or the common electrode, and the liquid crystal panel shown in FIGS. 3B-3G includes the enhanced electrode, the liquid crystal panel shown in FIGS. 2B-2D
- the shown liquid crystal panel and the liquid crystal panel shown in FIGS. 3B-3G may adopt different settings in some aspects, for example, different setting methods may be adopted in the pitch of the second electrode strips and the thickness of the liquid crystal layer. For example, in the liquid crystal panel shown in FIGS.
- the width of the second electrode strips ES2 is 1.9-3.3 microns, and the distance between adjacent second electrode strips ES2 It is 2.3 to 4.8 microns, and it is preferable that the width of the second electrode strip ES2 is smaller than the distance between adjacent second electrode strips ES2.
- the width of the second electrode strips ES2 is 2.0 to 3.8 microns, and the distance between adjacent second electrode strips ES2 is 1.8 to 5.4 microns, and preferably the width of the second electrode strip ES2 is greater than the spacing between adjacent second electrode strips.
- the second substrate S2 of the liquid crystal panel does not include the first enhancement electrode E3, making the width w of the second electrode strip ES2 smaller than the spacing s between the second electrode strips ES2 is beneficial to the second electrode layer E2 and the first An electric field is formed between the electrode layers E1; when the second substrate S2 of the liquid crystal panel includes the first enhancement electrode E3, the width w of the second electrode strips ES2 is greater than the spacing s between the second electrode strips ES2, which is beneficial to the pixels
- the vertical electric field formed between at least one of the electrode PE and the common electrode CE and the first enhancement electrode E1 adjusts the electric field formed between the second electrode layer E2 and the first electrode layer E1.
- the width of the second electrode strip ES2 when the width of the second electrode strip ES2 is 1.9-3.3 micrometers and the distance between adjacent second electrode strips ES2 is 2.3-4.8 micrometers, it can also be the width of the second electrode strip ES2 Is greater than or equal to the spacing between adjacent second electrode strips ES2; when the width of the second electrode strip ES2 is 2.0 to 3.8 micrometers and the spacing between adjacent second electrode strips ES2 is 1.8 to 5.4 micrometers, it is also It may be that the width of the second electrode strip ES2 is less than or equal to the distance between adjacent second electrode strips.
- FIG. 9A is a comparison diagram of the VT curve of the liquid crystal panel as shown in FIG. 2B-2D when the second electrode stripe width is the same and the second electrode stripe pitch is different, wherein the voltage in FIG. 9A represents the pixel electrode when the common electrode voltage is 0V Voltage.
- the second electrode strip width w is 2.3 micrometers
- the second electrode strip spacing s may be 2.3 micrometers, 3.3 micrometers, 4.3 micrometers, and 5.4 micrometers, respectively. It can be seen from FIG. 9A that as the electrode strip spacing s increases, the driving voltage gradually decreases, but the transmittance also gradually decreases.
- the electrode strip width w is approximately 2.3 micrometers
- the electrode strip spacing s is approximately 4.3 micrometers.
- Fig. 9B shows the transmittance of the liquid crystal panel shown in Figs. 2B-2D when the width of the second electrode strips and the distance between the second electrode strips are different.
- the second electrode strip w can be 1.9-3.3 microns
- the second electrode strip spacing s can be 2.3-4.8 microns, for example, w/s can be 2.3/ 2.3, 1.9/2.7, 2.3/3.3, 2.3/3.8, 2.3/4.8, 2.5/3.1, 2.8/2.8, 2.3/4.3, 2.8/3.8, 3.3/3.3, etc.
- the embodiments of the present disclosure include but are not limited to the above examples.
- FIG. 9C shows the transmittance of the liquid crystal panel shown in FIGS. 3B-3G when the width of the second electrode strips and the distance between the second electrode strips are different.
- the second electrode bar w can be 2.0-3.8 microns
- the second electrode bar spacing s can be 1.8-5.4 microns, for example, ws can be 2.0-3.6.
- the embodiments of the present disclosure include but are not limited to the above Example. It can be seen from FIG.
- the preferred combination is: 3.3-2.3, that is, the width w of the second electrode strips is approximately 3.3 micrometers, and the distance s of the second electrode strips is approximately 2.3 micrometers.
- FIG. 10A is a diagram of the phase difference-transmittance relationship of the liquid crystal panel shown in FIGS. 2B-2D provided by an embodiment of the disclosure.
- Fig. 10B is a diagram of the phase difference-transmittance relationship of the liquid crystal panel shown in Figs. 3B-3G provided by an embodiment of the disclosure.
- the first electrode layer in the liquid crystal panel shown in FIG. 3 includes a common electrode and the second electrode layer includes a pixel electrode as an example.
- the liquid crystal panel provided by the embodiment is compared with the liquid crystal panel shown in FIG. 1.
- FIG. 11 is a simulated comparison diagram of the V-T curve of the liquid crystal panel shown in FIG. 1 and the liquid crystal panel shown in FIG. 3B, wherein the voltage in FIG. 11 represents the voltage of the pixel electrode when the common electrode voltage is 0V.
- the liquid crystal panel provided by an embodiment of the present disclosure has a maximum transmittance of 0.363356 at 7V, which is compared with the liquid crystal panel shown in FIG. An increase of 5.2%. Therefore, the liquid crystal panel as shown in FIG. 3B provided by the embodiment of the present disclosure can achieve higher transmittance and lower driving voltage.
- FIG. 12A is a comparison diagram of the transmittance of the liquid crystal panel shown in FIG. 1 and that of the liquid crystal panel shown in FIG. 3B in the dark state affected by the deviation ⁇ POL of the optical axis of the polarizer.
- 12B is a comparison diagram of the transmittance of the liquid crystal panel shown in FIG. 1 and the liquid crystal panel shown in FIG. 3B in the dark state affected by the pretilt angle deviation ⁇ AL of the alignment layer. It can be seen from FIGS. 12A and 12B that for the brightness (L0) in the dark state, the L0 of the liquid crystal panel shown in FIG.
- the liquid crystal panel provided by the embodiment has stronger stability in the dark state.
- the ratio of the dark state brightness (L0) of the liquid crystal panel shown in FIG. 1 to the liquid crystal panel provided by the embodiment of the present disclosure is 1.579/0.205 ⁇ 7.7, so the dark state of the liquid crystal panel provided by the embodiment of the present disclosure
- the light leakage is lower, and it can be concluded that the contrast of the liquid crystal panel provided by the embodiment of the present disclosure is at least 7.7 times that of the liquid crystal panel shown in FIG. 1.
- the embodiments of the present disclosure can achieve a higher contrast ratio when using vertically aligned negative liquid crystals (for example, the contrast ratio is at least 7.7 times that of the liquid crystal panel shown in FIG. 1).
- FIGS. 13A to 13C are viewing angle characteristic diagrams of the liquid crystal panel as shown in FIG. 3B provided by an embodiment of the disclosure when the first electrode layer includes a common electrode and the second electrode layer includes a pixel electrode, where ⁇ represents a polar angle, Indicates the azimuth angle. It can be seen from FIGS. 13A to 13C that the red, green, and blue color shifts of the liquid crystal panel as shown in FIG. 3B provided by the embodiment of the present disclosure are all less than 0.04, that is, the liquid crystal panel of the embodiment of the present disclosure has a small color shift. The color cast.
- FIG. 14 is a comparison diagram of the Gamma characteristics of the liquid crystal panel as shown in FIG. 3B provided by an embodiment of the disclosure when the first electrode layer includes a common electrode and the second electrode layer includes a pixel electrode, and the Gamma characteristic of a VA (vertical alignment) product.
- REF represents the VA mode product
- ⁇ represents the polar angle, Indicates the azimuth angle. It can be seen from FIG. 14 that the Gamma shift of the liquid crystal panel provided by the embodiment of the present disclosure is smaller than that of the VA mode product.
- the liquid crystal panel provided by the embodiment of the present disclosure has an excellent performance of the lateral viewing angle Gamma curve, does not cause grayscale inversion, and does not need to perform pixel compensation. Therefore, the liquid crystal panel provided by the embodiment of the present disclosure has a pixel design
- the above is simpler than the VA mode product, does not occupy too much area of the display area, can achieve higher aperture ratio, and is more conducive to achieving high resolution.
- the embodiment of the present disclosure also provides a liquid crystal panel, as shown in FIGS. 3A to 3G, the liquid crystal panel includes a first substrate S1, a second substrate S2, and a liquid crystal layer located between the first substrate S1 and the second substrate S2 LC.
- the first substrate S1 includes a first base substrate BS1 and a pixel electrode PE and a common electrode CE located thereon;
- the second substrate S2 is opposite to the first substrate S1 and includes a second base substrate BS2 and a second base substrate BS2.
- the enhanced electrode (see the first enhanced electrode E3) on the upper side is configured to generate a non-zero voltage difference liquid crystal layer LC with at least one of the pixel electrode PE and the common electrode CE during operation.
- the arrangement of the pixel electrode, the common electrode, and the enhancement electrode can adopt the arrangement of the pixel electrode, the common electrode and the first enhancement electrode E3 in any of the above embodiments respectively, and the repetition will not be repeated.
- An embodiment of the present disclosure also provides a display device, which includes the liquid crystal panel provided in any of the above embodiments and a backlight source, where the backlight source is located on a side of the first substrate away from the second substrate.
- the liquid crystal panel includes a first substrate S1 and a second substrate S2.
- the first substrate S1 and the second substrate S2 are opposed to each other and are sealed by a frame sealant SF to form a liquid crystal cell.
- the liquid crystal cell is filled with a liquid crystal material to form a liquid crystal layer LC.
- the display device also includes a backlight source BL for providing a backlight for the liquid crystal panel, which is located on a side of the first substrate S1 away from the second substrate S2, that is, the first substrate S1 is located between the second substrate S2 and the backlight source BL.
- the backlight source BL includes a light guide plate and a light source.
- the light source can be located on the side of the light guide plate away from the liquid crystal panel (that is, the backlight is a direct backlight), or the light emitted by the light source can be emitted from the side of the light guide plate into the light guide plate (that is, the backlight is Side-type backlight).
- the display device provided by the embodiment of the present disclosure may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
- a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
- the embodiment of the present disclosure also provides a driving method of the liquid crystal panel shown in FIGS. 3A to 3G.
- the driving method includes: applying a common electrode signal to the common electrode CE included in the first substrate S1; applying a pixel electrode signal to the pixel electrode PE included in the first substrate S1; and applying the first enhancement electrode E3 included in the second substrate S2 A signal different from the pixel electrode signal and the common electrode signal (for example, the signal is a constant signal or a changing signal), so that at least one of the pixel electrode PE and the common electrode CE and the first enhancement electrode E3 generate a non-zero voltage difference, Thus, at least one of the pixel electrode PE and the common electrode CE and the first enhancement electrode E3 form a vertical electric field.
- the first enhancement electrode E3 may only generate a non-zero voltage difference with the pixel electrode PE; or, the first enhancement electrode E3 may only generate a non-zero voltage difference with the common electrode CE; or, the first enhancement electrode E3 may only generate a non-zero voltage difference with the common electrode CE; The enhancement electrode E3 may generate a non-zero voltage difference with each of the pixel electrode PE and the common electrode CE.
- the driving method further includes: applying different signals to the first enhancement electrode E3 and the second enhancement electrode E4 included in the second substrate S2, so that the first A non-zero electric field may be formed between the enhanced electrode E3 and the second enhanced electrode E4.
- the arrangement manner of the pixel electrode PE, the common electrode CE, the first enhancement electrode E3, and the fourth enhancement electrode E4 and the signal application manner can adopt the manner in the above example about the liquid crystal panel, which will not be omitted here. Go into details.
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Abstract
Description
Claims (20)
- 一种液晶面板,包括:第一基板,其包括第一衬底基板、以及位于所述第一衬底基板上的像素电极和公共电极;第二基板,其与所述第一基板相对并且包括第二衬底基板;以及液晶层,其在垂直于所述第一衬底基板的方向上位于所述第一基板和所述第二基板之间,其中,所述液晶层中的液晶的初始取向为垂直取向。
- 根据权利要求1所述的液晶面板,其中,所述第一基板包括位于所述第一衬底基板上的第一取向层,所述第二基板包括位于所述第二衬底基板上的第二取向层,所述第一取向层和所述第二取向层都与所述液晶层直接接触,并且所述第一取向层和所述第二取向层被配置为使所述液晶的初始取向为垂直取向。
- 根据权利要求1或2所述的液晶面板,其中,所述液晶层中的液晶为负性液晶。
- 根据权利要求1-3中任一项所述的液晶面板,其中,所述第一基板包括依次位于所述第一衬底基板面向所述液晶层一侧的第一电极层和第二电极层,所述第一电极层在垂直于所述第一衬底基板的方向上位于所述第一衬底基板和所述第二电极层之间;所述第二电极层包括间隔的多个第二电极条,所述像素电极和所述公共电极中的一个位于所述第二电极层中且包括所述多个第二电极条;所述像素电极和所述公共电极中的另一个位于所述第一电极层中且包括在平行于所述第一衬底基板的方向上超出所述第二电极层的部分。
- 根据权利要求4所述的液晶面板,其中,所述第一电极层包括连续的板状结构,所述多个第二电极条在所述第一衬底基板上的正投影位于所述板状结构在所述第一衬底基板上的正投影内。
- 根据权利要求4所述的液晶面板,其中,所述第一电极层包括间隔的多个第一电极条,所述像素电极和所述公共电极中的所述另一个包括所述多个第一电极条;所述多个第一电极条在所述第一衬底基板上的正投影与所述多个第二电极条在所述第一衬底基板上的正投影部分交叠。
- 根据权利要求4所述的液晶面板,其中,所述第一电极层包括间隔的多个第一电极条,所述像素电极和所述公共电极中的所述另一个包括所述多个第一电极条;所述多个第一电极条在所述第一衬底基板上的正投影位于所述多个第二电极条在所述第一衬底基板上的正投影之外。
- 根据权利要求4-7中任一项所述的液晶面板,其中,所述第二基板还包括位于所述第二衬底基板面向所述液晶层一侧的第一增强电极;所述第一增强电极被配置为在工作时与所述像素电极和所述公共电极中的至少一个之间产生非零电压差。
- 根据权利要求8所述的液晶面板,其中,所述第一增强电极包括连续的板状结构,所述多个第二电极条在所述第一衬底基板上的正投影位于所述板状结构的第一增强电极在所述第一衬底基板上的正投影内。
- 根据权利要求8所述的液晶面板,其中,所述第一增强电极包括间隔的多个第三电极条,所述多个第三电极条在所述第一衬底基板上的正投影与所述多个第二电极条在所述第一衬底基板上的正投影错开。
- 根据权利要求8-10中任一个所述的液晶面板,其中,所述第一增强电极被配置为在工作时被施加的信号不同于所述像素电极在工作时被施加的信号且不同于所述公共电极在工作时被施加的信号。
- 根据权利要求8-10中任一个所述的液晶面板,其中,所述第一增强电极与所述公共电极电连接;或者,所述第一增强电极与所述像素电极电连接。
- 根据权利要求12所述的液晶面板,其中,所述液晶面板还包括连接所述第一基板和所述第二基板的封框胶,所述封框胶中设置有导电连接部,所述第一增强电极通过所述导电连接部电连接所述像素电极或所述公共电极;或者,所述的液晶面板还包括位于所述第一基板和所述第二基板之间的多个隔垫物,所述第一增强电极在最靠近所述液晶面板边缘的隔垫物所在位置处电 连接所述像素电极或所述公共电极。
- 根据权利要求8-13中任一项所述的液晶面板,其中,所述第二电极条的宽度为2.0~3.8微米,相邻第二电极条之间的间距为1.8~5.4微米。
- 根据权利要求4-7中任一项所述的液晶面板,其中,所述第二电极条的宽度为1.9~3.3微米,相邻第二电极条之间的间距为2.3~4.8微米。
- 根据权利要求4-15中任一项所述的液晶面板,其中,所述第一基板还包括在垂直于所述第一衬底基板的方向上位于所述第一电极层和所述第二电极层之间的绝缘层,所述绝缘层的厚度为100~2000纳米。
- 根据权利要求1-3中任一项所述的液晶面板,其中,所述像素电极和所述公共电极位于同一层中;所述第二基板还包括位于所述第二衬底基板面向所述液晶层一侧的第一增强电极;所述第一增强电极被配置为在工作时与所述像素电极和所述公共电极中的至少一个之间产生非零电压差。
- 根据权利要求8-14和17中任一项所述的液晶面板,其中,所述第二基板还包括位于第二衬底基板上且与所述第一增强电极绝缘的第二增强电极;所述第一增强电极和所述第二增强电极被配置为在工作时被施加不同信号。
- 根据权利要求1-18中任一项所述的液晶面板,其中,所述第一增强电极和所述第二增强电极之一与所述像素电极电连接,并且所述第一增强电极和所述第二增强电极中的另一个与所述公共电极电连接。
- 一种显示装置,包括权利要求1-19中任一项所述的液晶面板以及背光源,其中,所述背光源位于所述第一基板的远离所述第二基板的一侧。
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