Display Substrate and Display Panel

Abstract

The present invention provides a display substrate and a display panel, belonging to the field of display technology, which can at least partially solve the problem of low pixel aperture ratio of existing multi-domain display panels. A display substrate of the present invention includes pixel units, and the pixel units include: pixel electrodes and alignment layers, and the orthographic projections of the pixel electrodes and the alignment layers on the substrate correspond to each other and overlap; the alignment of liquid crystal molecules is achieved by ultraviolet irradiation of the alignment layer; the pixel electrodes include: a plurality of electrode blocks connected electrically, and the pattern shapes of at least some of the electrode blocks are different; the alignment layer includes: a plurality of alignment sub-regions, and the alignment sub-regions correspond to the electrode blocks one by one.

Description

Technical Field

[0001] The present invention belongs to the technical field of displays, and particularly relates to a display substrate and a display panel. Background Art

[0002] Liquid Crystal Displays (LCDs) have many advantages such as a thin body, low power consumption, and low radiation, and are widely used, such as in liquid crystal televisions, mobile phones, personal digital assistants, digital cameras, computer screens, or laptop computer screens.

[0003] Most of the existing liquid crystal displays are backlight type liquid crystal displays, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. Generally, the liquid crystal display panel is composed of a color filter substrate (ColorFilter, CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFTArray Substrate), and a liquid crystal layer (Liquid Crystal Layer) filled between the two substrates. Its working principle is to change the electric field magnitude in the pixel unit by applying a driving voltage on the CF substrate and the TFT substrate to change the rotation angle of the liquid crystal molecules, thereby controlling the rotation of the liquid crystal molecules in the liquid crystal layer, controlling the light transmittance, and refracting the light of the backlight module to generate an image.

[0004] Due to the optical anisotropy of the liquid crystal molecules, when the user views from different angles, the images seen are different. From the viewing direction parallel to the short axis of the liquid crystal molecules to the viewing direction parallel to the long axis of the liquid crystal molecules, the brightness gradually decreases. Moreover, when the viewing direction is consistent with the long axis of the liquid crystal molecules, the color appears bluish, and when the viewing direction is consistent with the short axis direction of the liquid crystal molecules, the color appears yellowish.

[0005] In order to reduce color deviation and improve the viewing angle, in the prior art, pixel electrodes with a multi-domain structure are generally adopted. The pixel electrode is divided into multiple regions, and multiple slits are respectively formed in the multiple regions. The extending directions of the slits in different regions are different, corresponding to different deflection directions of the liquid crystal molecules in different regions. Therefore, when viewing this pixel unit at any viewing position, if the viewing direction is consistent with the long axis of the liquid crystal molecules in one region of the pixel unit, resulting in lower brightness and bluish color, it is not consistent with the long axis of the liquid crystal molecules in another region, so as to improve the overall brightness and color deviation of the pixel unit, thereby making the viewing effects at different viewing angles tend to be consistent.

[0006] Specifically, in an existing liquid crystal display panel, the color shift of pixel units can be reduced by 8-domain display. The 8-domain display mode generally forms 8 regions in one pixel unit. Each pixel unit includes two adjacent sub-pixel units, each sub-pixel unit is driven by a thin-film transistor respectively, each sub-pixel unit includes four sub-regions, and the alignment directions of each sub-region are different, so as to achieve 8-domain display.

[0007] Among them, in order to achieve 8-domain display, it is necessary to set two thin-film transistors to control the switching of non-two sub-pixel units in one pixel unit. The two thin-film transistors will occupy a relatively large pixel area, restricting the pixel aperture ratio of the liquid crystal display panel. Summary of the Invention

[0008] The present invention at least partially solves the problem that the pixel aperture ratio of the existing multi-domain display substrate is relatively low, and provides a display substrate with a higher aperture ratio.

[0009] The technical solution adopted to solve the technical problem of the present invention is a display substrate, including pixel units, and the pixel units include: pixel electrodes and alignment layers, and the positive projections of the pixel electrodes and the alignment layers on the substrate correspond to each other and overlap; the alignment layer realizes the alignment of liquid crystal molecules through ultraviolet irradiation;

[0010] The pixel electrodes include: a plurality of electrode blocks that are electrically connected, and the pattern shapes of at least some of the electrode blocks are different;

[0011] The alignment layer includes: a plurality of alignment sub-regions, and the alignment sub-regions correspond to the electrode blocks one by one.

[0012] Optionally, along the first direction, the pattern shapes of some adjacent two electrode blocks are the same, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks are different.

[0013] Further optionally, along the second direction, the pattern shapes of some adjacent two electrode blocks are different, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks are the same.

[0014] Further optionally, along the second direction, the pattern shapes of some adjacent two electrode blocks are the same, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks are different.

[0015] Optionally, the plurality of electrode blocks include: a first electrode block and a second electrode block, wherein the first electrode block includes a plate-shaped electrode block; the second electrode block includes a plurality of electrode strips, and there are slits between adjacent electrode strips.

[0016] Further optionally, the width of the electrode strip has the same value as the width of the slit.

[0017] Further optionally, along the first direction, some of the adjacent two electrode blocks are both the second electrode blocks, and the extending directions of the electrode bars of the adjacent two electrode blocks are perpendicular.

[0018] Optionally, in the same pixel unit, the area ratio of the first electrode block to the second electrode block includes: [0.75, 2.25].

[0019] Optionally, multiple electrode blocks in the same pixel unit are of an integral structure.

[0020] Another technical solution adopted to solve the technical problem of the present invention is a display panel, including any one of the above display substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the following specific embodiments, but do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 It is a schematic structural diagram of a pixel electrode in a display substrate according to an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of a pixel unit in a display substrate according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic structural diagram of a pixel unit in another display substrate according to an embodiment of the present invention;

[0025] Figure 4 According to the present invention Figure 2 Schematic diagram of the optical structure simulation result of the pixel unit;

[0026] Figure 5 According to the present invention Figure 3 Schematic diagram of the optical structure simulation result of the pixel unit;

[0027] Figure 6 According to the present invention Figure 2 Schematic diagram of the liquid crystal deflection simulation result corresponding to some pixel blocks of the pixel unit;

[0028] Figure 7 According to the present invention Figure 2 Schematic diagram of the liquid crystal deflection simulation result corresponding to another part of the pixel blocks of the pixel unit;

[0029] Figure 8 It is the vertical viewing angle deviation curve graph of the pixel unit according to the present invention;

[0030] Figure 9 It is the V-T curve graph of the pixel unit according to the present invention. Detailed Embodiments

[0031] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the present invention, the "same-layer setting" of two structures means that they are formed by the same material layer. Therefore, they are in the same layer in the stacking relationship, but it does not mean that the distances between them and the substrate are equal, nor does it mean that the other layer structures between them and the substrate are exactly the same.

[0033] In the present invention, the "lithography process" refers to the steps of forming a structure with a specific pattern, which can be a lithography process. The lithography process includes one or more steps such as forming a material layer, coating a photoresist, exposing, developing, etching, and photoresist stripping; of course, the "lithography process" can also be other processes such as an imprinting process or an inkjet printing process.

[0034] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the drawings, the same elements are denoted by similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale. In addition, some well-known parts may not be shown in the figures.

[0035] In the following, many specific details of the present invention are described, such as the structure, material, size, processing technology, and technique of components, in order to better understand the present invention. However, as those skilled in the art can understand, the present invention can be implemented without these specific details.

[0036] For the current mainstream TFT-LCD liquid crystal display panels on the market, they can be divided into: Vertical Alignment (VA) type, Twisted Nematic (TN) or Super Twisted Nematic (STN) type, In-Plane Switching (IPS) type, and Fringe Field Switching (FFS) type. In the manufacturing process of liquid crystal display panels, aligning the alignment film is an important process, and through the alignment process, the liquid crystal molecules are arranged in a specific direction and angle. The traditional alignment process uses the rubbing method, which can only align in one horizontal direction and is widely used in TN-type and IPS-type liquid crystal display panels. For VA-type liquid crystal display panels, the mainstream of photo-alignment is to apply an electric field on the liquid crystal display panel and use ultraviolet curing (UV curing) to make the liquid crystal tilt in the expected direction. However, for VA-type liquid crystal display panels that need to expand the viewing angle and divide the sub-pixels into multiple regions with different alignment directions in each region, the rubbing method is usually not used, but the photo-alignment method is adopted.

[0037] The mainstream of optical alignment for VA-type liquid crystal display panels is to apply an electric field to the liquid crystal display panel and use ultraviolet light curing (UV curin) to make the liquid crystal tilt in the expected direction. The ultraviolet-induced multi-domain vertical alignment technology (UltraViolet induced multi-domain Vertical Alignment, UV2A) uses polarized UV light to irradiate the alignment film, making the liquid crystal tilt in the expected direction, omitting the power-on process, and without the need for ITO electrode patterning, which can further simplify the alignment steps and design scheme, and has a higher alignment accuracy.

[0038] It should be understood that a traditional liquid crystal display panel is formed by laminating a thin film transistor array substrate (ThinFilmTransistor Array Substrate, abbreviated as TFT Array Substrate) and a color filter substrate (ColorFilter Substrate, abbreviated as CF Substrate). Pixel electrodes and common electrodes are formed on the array substrate and the color filter substrate respectively, and liquid crystal is filled between the array substrate and the color filter substrate. Its working principle is to apply a driving voltage between the pixel electrode and the common electrode, and use the electric field formed between the pixel electrode and the common electrode to control the rotation of liquid crystal molecules in the liquid crystal layer, and refract the light of the backlight module to generate an image.

[0039] Common liquid crystal display modes include the twist nematic mode (TN), the vertical alignment mode (Vetical Alignment, VA), the in-plane switching mode (In-palne Switching, IPS), and the fringe field switching mode (Fringe Field Switching, FFS). The display modes are different, and the pixel structures vary greatly.

[0040] The early VA technology was called MVA (Multi-domain VA). It made unique protrusions on the color filter substrate and the array substrate respectively, enabling the liquid crystal molecules to achieve an initial orientation at the edges of the protrusions. After power-on, the liquid crystal molecules are arranged along this initial orientation. In the past, the practical method for controlling the alignment direction was only the rubbing method of rubbing a cloth on a polymer film. However, the rubbing method can only be aligned in the horizontal direction when used on a surface. It has been widely used in TN (Twist Nematic) liquid crystal panels. However, for the VA mode of TV liquid crystal panels to expand the viewing angle, it is necessary to partially change the alignment direction and divide it into multiple regions, so the rubbing method cannot be used.

[0041] In the VA mode, the liquid crystal molecules are aligned basically perpendicular to the panel without an applied electric field. When an electric field is applied, the liquid crystal molecules tilt and the state changes. To control the tilting direction of the liquid crystal molecules when an electric field is applied, current liquid crystal panel designs have protrusions and slits, and by changing their shapes, the slightly tilted state and the stable state of the liquid crystal molecules are achieved. When an electric field is applied, the liquid crystal molecules near the protrusions and slits start to tilt first, and then, following the domino effect, as other liquid crystal molecules are pushed down, all the liquid crystal molecules tilt in one direction.

[0042] The UV2A (UV VA) technology is a VA (Vertical Alignment) panel technology for liquid crystal alignment using ultraviolet light (UV: Ultraviolet). Its name comes from the multiplication of ultraviolet light UV and the VA mode of the liquid crystal panel. The key is to use a special polymer material as the alignment film to precisely control the tilting of liquid crystal molecules along the direction of the ultraviolet light, with the precision unit being picometers. After introducing the UV2A technology, the slits and protrusions used to control the liquid crystal alignment in current VA mode liquid crystal panels can be omitted. Therefore, the aperture ratio, contrast ratio, and response speed of the liquid crystal panel can all be improved, and the production process can also be significantly reduced.

[0043] The UV2A technology can achieve the state where all liquid crystal molecules tilt in the designed direction through the alignment film. So when an electric field is applied, the liquid crystal molecules tilt in the same direction simultaneously. Since it is possible to divide into multiple regions without using protrusions and slits, the aperture ratio is increased by more than 20% compared to the original panel divided into multiple regions using protrusions. With a very small backlight brightness, the same brightness as before can be obtained, reducing power consumption and the number of backlight sources is beneficial for energy conservation and cost savings. High definition and 3D displays, etc. are also easy to achieve.

[0044] The present invention will be described below with reference to the accompanying drawings and in conjunction with specific embodiments.

[0045] In a first aspect, this embodiment provides a display substrate including pixel units, and each pixel unit includes: a pixel electrode and an alignment layer. Among them, the orthographic projections of the pixel electrode and the alignment layer on the substrate correspond and overlap; the alignment layer realizes the alignment of liquid crystal molecules through ultraviolet irradiation (UV2A technology); the pixel electrode includes: a plurality of electrode blocks 1 that are electrically connected, and at least some of the pattern shapes of the electrode blocks 1 are different; the alignment layer includes: a plurality of alignment sub-regions, and the alignment sub-regions correspond one-to-one with the electrode blocks 1.

[0046] An alignment layer is provided in the area where the pixel electrode is located. Among them, the alignment layer can achieve the vertical alignment of liquid crystal molecules through ultraviolet irradiation, that is, the liquid crystal molecules in the area where the pixel electrode is located are aligned by the UV2A technology. In this alignment method, the initial alignment direction of the liquid crystal is only related to the ultraviolet irradiation method and has nothing to do with the shape of the pixel electrode. Therefore, under the UV2A technology alignment technology, electrode blocks 1 with the same or different patterns can be arranged in the same pixel unit. The driving electric fields formed by the electrode blocks 1 with different patterns are different, and under the condition of the same voltage signal driving, the deflection driving results of the liquid crystal are different. In this embodiment, the liquid crystal molecules can be aligned by the UV2A technology first to make the liquid crystal molecules tilt in a preset direction, and under the action of the driving electric field of the pixel electrode, the liquid crystal molecules tilt and deflect in the preset direction. Among them, since the planar physical structures of different electrode blocks 1 in the same pixel (that is, the patterns of the electrode blocks 1 are different) are different, the directions of the driving electric fields generated for the liquid crystal are also different. On this basis, the liquid crystal in the same pixel area can deflect in different directions based on different driving electric fields, thereby effectively improving the display color shift phenomenon of the pixel unit.

[0047] Compared with the prior art, each pixel unit includes two adjacent sub-pixel units, each sub-pixel unit is driven by a thin-film transistor respectively, each sub-pixel unit includes four sub-regions, and the alignment directions of each sub-region are different to achieve an 8-domain display mode. Based on the display substrate provided in this embodiment, when implementing the 8-domain display technology, referring to Figures 2 to 5 , an 8-domain display under the same potential can be achieved based on two different patterns of electrode blocks 1 in combination with four different liquid crystal alignment directions, so that the leakage structure in the pixel unit in the prior art can be omitted, and further the aperture ratio of the pixel unit can be increased. Further, since the technical solution provided in this embodiment can omit the leakage structure, the number of scan lines and data line RC (resistance capacitance) corresponding to a single pixel unit is less, the load is lower, the signal delay on the signal line is reduced, and the scan line delay is reduced, thereby reducing the mis-charged potential and increasing the charging rate; the data line delay is reduced, thereby increasing the charging rate.

[0048] Among them, the pattern shapes of the electrode blocks 1 can include: a whole-plane flat electrode block 1, a patterned electrode block 1 with a hollow notch, etc. Specifically, the patterned electrode block 1 with a hollow notch can be divided into various different electrode blocks 1 according to the shape size, arrangement method, etc. of the hollow notch. It should be noted that in this embodiment, for the patterned electrode block 1, when its pattern shape and size are the same, its deformation such as rotation design, axisymmetric design, and central symmetric design at a certain angle in the actual situation is regarded as the same kind of electrode block 1. In other words, in this embodiment, the electrode blocks 1 that can substantially form the same electric field are regarded as the same kind of electrode blocks 1.

[0049] In some embodiments, the pixel electrode includes a first electrode block 11 and a second electrode block 12. The first electrode block 11 is electrically connected to the second electrode block 12, wherein the physical morphologies of the first electrode block 11 and the second electrode block 12 are different. Specifically, the first electrode block 11 may be a plate-shaped electrode block 1, that is, a whole-plane flat electrode block 1, and the second electrode block 12 may be a patterned electrode block 1. For example, referring to Figures 1 to 3 as shown, the second electrode block 12 may include a plurality of electrode strips, and there are slits between adjacent electrode strips.

[0050] Referring to Figures 1 to 3 as shown, the first electrode block 11 may be a whole-piece flat electrode block 1, and the second electrode block 12 may include a plurality of parallel electrode strips, and adjacent two electrode strips are separated by slits. In the working state, the first electrode block 11 and the second electrode block 12 respectively form a driving electric field with the common electrode. Among them, due to the different patterns of the first electrode block 11 and the second electrode block 12, the driving electric fields generated by the two at the same potential are also different. Referring to Figure 6 and Figure 7 as shown, the deflection directions of the liquid crystal under the action of the driving electric fields of the first electrode block 11 and the second electrode block 12 are different, so that the display color deviation phenomenon of the pixel unit can be effectively improved.

[0051] Optionally, in some embodiments, along the first direction, the pattern shapes of some adjacent two electrode blocks 1 are the same, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks 1 are different. That is to say, in the same pixel unit, the driving electric fields generated by some adjacent two electrode blocks 1 in the first direction are the same, while the initial alignment directions of the liquid crystal are different. Under the action of the pixel electrode, the liquid crystal can deflect based on different initial alignment directions under the same driving electric field condition, so as to improve the color deviation problem of the pixel unit in the first direction.

[0052] Optionally, in some embodiments, along the second direction, the pattern shapes of some adjacent two electrode blocks 1 are different, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks 1 are the same. Referring to Figure 6 and Figure 7 as shown, in this embodiment, in the same pixel unit, under the action of the pixel electrode, the driving electric fields generated by some adjacent two electrode blocks 1 in the second direction are different, while the initial alignment directions of the liquid crystal can be the same. That is to say, even if the alignment directions of the liquid crystal in the regions where the adjacent two electrode blocks 1 are located are the same, due to the different driving electric fields generated by the electrode blocks 1, the deflection angles of the liquid crystal under the action of the driving electric field are still different, so the color deviation problem of the pixel unit can be solved to a certain extent.

[0053] Optionally, in some embodiments, the pattern shapes of some adjacent two electrode blocks 1 are the same, and the alignment directions of the alignment sub-regions corresponding to the adjacent two electrode blocks 1 are different. Referring toFigure 2 and Figure 3 As shown in Figure 3 , in the same pixel unit, the driving electric fields generated by two adjacent electrode blocks 1 in the second direction are the same, while the initial alignment directions of the liquid crystal are different. Under the action of the pixel electrode, the liquid crystal can be deflected based on different initial alignment directions under the same driving electric field condition, thereby improving the color shift problem of the pixel unit in the second direction.

[0054] Optionally, in some embodiments, the slits of each second electrode block 12 are respectively parallel to the alignment direction of the liquid crystal molecules of the corresponding alignment layer. That is, in this embodiment, the liquid crystal molecules are aligned by the UV2A technology first, so that the liquid crystal molecules are tilted in a preset direction. However, some liquid crystal molecules may not rotate to the preset direction. On this basis, by setting the slits, under the action of the pixel electrode, the alignment directions of the liquid crystal molecules in the regions where each electrode block 1 is located can be respectively parallel to the extending direction of the slit of the electrode block 1, so that all the liquid crystal molecules can be tilted in the preset direction, improving the consistency of the alignment directions of the liquid crystal molecules in the region where the same electrode block 1 is located, and further improving the orderliness of the liquid crystal molecule arrangement.

[0055] Optionally, in some embodiments, along the first direction, two adjacent electrode blocks 1 are both second electrode blocks 12, and the extending directions of the electrode strips of the two adjacent electrode blocks 1 are perpendicular. The function of the electrode strip is to limit the tilt direction of the corresponding liquid crystal molecules by applying a voltage to it. Preferably, the tilt direction of the liquid crystal molecules is the same as the direction of the corresponding electrode strip or there is a corresponding relationship between the two directions, so that the consistency of the alignment directions of the liquid crystal molecules in the region where the same electrode block 1 is located can be improved by using the electrode strip, and further the orderliness of the liquid crystal molecule arrangement can be improved. In order to achieve multi-domain display, the tilt directions of the liquid crystal corresponding to two adjacent electrode blocks 1 with the same driving electric field should be perpendicular. Therefore, in this embodiment, the orderliness of the liquid crystal molecule arrangement corresponding to each electrode block 1 can be improved through the above settings.

[0056] Taking an 8-domain display product as an example, as a specific implementation manner, referring to Figures 1 to 3 As shown in Figures 1 to 3 , in this embodiment, a plurality of electrode blocks 1 are arranged in a four-row and two-column array, and the region where each electrode block 1 is located is used as one domain. Among them, the electrode blocks 1 located in the first row are of the same type as the electrode blocks 1 located in the fourth row, and the electrode blocks 1 located in the second row are of the same type as the electrode blocks 1 located in the third row; the alignment directions of the alignment sub-regions corresponding to the electrode blocks 1 in the first row and the second row in the same column are the same; the alignment directions of the alignment sub-regions corresponding to the electrode blocks 1 in the third row and the fourth row in the same column are the same.

[0057] Specifically, referring to Figures 1 to 3As shown, the electrode block 1 in the first row and the electrode block 1 in the fourth row can both be the second electrode block 12, and the electrode block 1 in the second row and the electrode block 1 in the third row are both the first electrode block 11; the alignment directions of the alignment sub-regions corresponding to the two electrode blocks 1 in the same row are different; in the same column of electrode blocks 1, the alignment directions of the alignment sub-regions corresponding to the electrode blocks 1 in the first row and the second row are the same, and the alignment directions of the alignment sub-regions corresponding to the electrode blocks 1 in the third row and the fourth row are the same. Based on the above design method, for the display substrate provided in this embodiment, on the basis of the 4-domain pixels in the prior art, when preparing the pixel electrode, the mask design of the pixel electrode can be changed so that each domain region in the 4-domain pixels in the prior art corresponds to two electrode blocks 1 with different patterns, and thus the 8-domain conversion of the 4-domain pixels can be achieved.

[0058] Optionally, in some embodiments, the width of the electrode strip and the width of the slit have the same value. Generally speaking, the larger the width of the electrode strip, the smaller the distance between two adjacent electrode strips, and the higher the transmittance of the corresponding liquid crystal pixel. On the contrary, the smaller the width of the electrode strip, the larger the distance between two adjacent electrode strips, and the lower the transmittance of the corresponding liquid crystal pixel. Preferably, when the width of the pixel electrode strip and the width of the slit have the same value, the transmittance of the liquid crystal pixel of the pixel unit is relatively high. Optionally, in some embodiments, the width of the slit can be 5 μm, and the width of the electrode strip between the slits can be 5 μm.

[0059] Optionally, in some embodiments, in the same pixel unit, the areas of the first electrode blocks 11 are equal, and the areas of the second electrode blocks 12 are also equal. That is, the areas of the domains corresponding to the electrode blocks 1 are equal, which is beneficial to uniform color deviation in all directions of the pixel unit and avoids the phenomenon that the color deviation in a certain direction may be too large due to unequal areas of the electrode blocks 1.

[0060] Optionally, the area ratio of the first electrode block 11 to the second electrode block 12 includes: [0.75, 2.25]. Refer to Figures 1 to 3 As shown, it can be understood that the first electrode block 11 is a flat electrode block 1, and the second electrode block 12 is a patterned electrode block 1, and their effects on the transmittance of the liquid crystal and the color deviation degree of the pixel unit are different. Among them, if this ratio is too small, the liquid crystal light transmission efficiency decreases, and then the transmittance decreases. At the same time, for the entire pixel unit, the minimization of color deviation requires that the ratio of liquid crystals with different orientations in the pixel unit reaches an optimal value. Conceptually, the area ratio of the channel part to the planar part should reach the optimal value. If this optimal value is not reached, it means that the orientation of the liquid crystal is too single, and then the color deviation deteriorates. Experimental data shows that when the above ratio is too small, the liquid crystal transmittance is insufficient and the color deviation deteriorates; if the above ratio is too large, the color deviation deteriorates.

[0061] Further optionally, the area ratio of the first electrode block 11 to the second electrode block 12 is 1.65. Refer toFigure 8 and Figure 9 As shown in Figure 9 , when the ratio is 1 (Example 1 in the figure), the color deviation of the pixel unit is the lowest, and the transmittance is comparable to that of the 8-domain display product in the prior art; when the ratio is 1.65 (Example 2 in the figure), the color deviation of the pixel unit is slightly lower than that of the prior art, and the transmittance is significantly higher than that of the prior art. The overall display effect is significantly better than that of the prior art.

[0062] Optionally, in some embodiments, the multiple electrode blocks 1 in the same pixel unit are of an integral structure. In the display substrate provided in this embodiment, the multiple electrode blocks 1 in the same pixel unit are electrically connected. At this time, each electrode block 1 can be of an integral structure and can be formed synchronously through a single lithography process, thereby simplifying the product structure of the display substrate and at the same time minimizing the manufacturing process of the display substrate and reducing the manufacturing cost.

[0063] In a second aspect, this embodiment provides a display panel, which includes any one of the above display substrates.

[0064] Specifically, the display panel can be any product or component with a display function, such as a liquid crystal display panel, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc.

[0065] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0066] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and its modifications based on the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A display substrate includes pixel units, and the pixel units comprise: a pixel electrode and an alignment layer, and the orthographic projections of the pixel electrode and the alignment layer on the substrate correspond to each other and overlap; characterized in that the alignment layer realizes the alignment of liquid crystal molecules through ultraviolet irradiation; the pixel electrode includes a plurality of electrode blocks connected electrically; the alignment layer includes: a plurality of alignment sub-regions, and the alignment sub-regions correspond to the electrode blocks one by one; the plurality of electrode blocks in the same pixel unit are of an integral structure; the plurality of electrode blocks include: a first electrode block and a second electrode block, wherein the first electrode block includes a plate-shaped electrode block; the second electrode block includes a plurality of electrode strips, and there are slits between adjacent electrode strips; the width of the electrode strips is the same as the width of the slits; the plurality of electrode blocks are arranged in a four-row and two-column array, the electrode blocks in the first row and the electrode blocks in the fourth row are both the second electrode blocks, and the electrode blocks in the second row and the electrode blocks in the third row are both the first electrode blocks; in the same column, the alignment directions of the alignment sub-regions corresponding to the second electrode block in the first row and the first electrode block in the second row are the same; in the same column, the alignment directions of the alignment sub-regions corresponding to the first electrode block in the third row and the second electrode block in the fourth row are the same.

2. The display substrate according to claim 1, characterized in that the extending directions of the electrode strips of the two second electrode blocks in the first row are perpendicular to each other, and the extending directions of the electrode strips of the two second electrode blocks in the fourth row are perpendicular to each other; the extending directions of the electrode strips of the two second electrode blocks in the same column are perpendicular to each other.

3. The display substrate according to claim 1 or 2, characterized in that in the same pixel unit, the area ratio of the first electrode block to the second electrode block is [0.75, 2.25].

4. A display panel, characterized in that it includes the display substrate according to any one of claims 1 to 3.

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