CN110244478B - Display direction control panel, control method and display device - Google Patents
Display direction control panel, control method and display device Download PDFInfo
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- CN110244478B CN110244478B CN201910523252.5A CN201910523252A CN110244478B CN 110244478 B CN110244478 B CN 110244478B CN 201910523252 A CN201910523252 A CN 201910523252A CN 110244478 B CN110244478 B CN 110244478B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention provides a display direction control panel, a control method and a display device, belongs to the technical field of display, and can at least partially solve the problem that the light-emitting angle of the existing display device cannot be flexibly controlled. The display direction control panel comprises a first substrate, a second substrate and a first liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the first liquid crystal layer is positioned between the first substrate and the second substrate, the first substrate comprises a first base and a plurality of parallel first display direction control lines, the second substrate comprises a second base and a plurality of parallel second display direction control lines, the first display direction control lines are positioned on one side, facing the second base, of the first base, the second display direction control lines are positioned on one side, facing the first base, of the second base, and the extending direction of the first display direction control lines is different from that of the second display direction control lines.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display direction control panel, a display device and a display direction control method.
Background
The light emitted by a display panel (e.g., an OLED display panel, a liquid crystal display panel, a Micro-LED display panel, etc.) is generally divergent. The display device of the prior art has not been able to flexibly control the display direction, for example, the display device can control the directions of the lights emitted from the respective regions of the display panel to be uniformly directed to the left, uniformly directed to the right, or concentrated at one point.
Disclosure of Invention
The invention at least partially solves the problem that the existing display device cannot realize flexible adjustment of the display direction, and provides a display direction control panel, a display device and a display direction control method.
The technical scheme adopted for solving the technical problem is that the display direction control panel comprises a first substrate, a second substrate and a first liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, the first liquid crystal layer is positioned between the first substrate and the second substrate, the first substrate comprises a first base and a plurality of parallel first display direction control lines, the second substrate comprises a second base and a plurality of parallel second display direction control lines, the first display direction control lines are positioned on one side, facing the second base, of the first base, the second display direction control lines are positioned on one side, facing the first base, of the second base, and the extension direction of the first display direction control lines is different from that of the second display direction control lines; the first display direction control lines adjacent to each other are at different distances from the first substrate, the first display direction control lines next adjacent to each other are at the same distance from the first substrate, and no gap is left between the first display direction control lines adjacent to each other and the orthographic projection of the first substrate, and/or the second display direction control lines next adjacent to each other are at different distances from the second substrate, and the second display direction control lines next adjacent to each other are at the same distance from the second substrate, and no gap is left between the second display direction control lines adjacent to each other and the orthographic projection of the second substrate.
Optionally, the first direction is perpendicular to the second direction.
Optionally, the display direction control panel further comprises a first alignment layer covering the first display direction control line and a second alignment layer covering the second display direction control line, and the alignment directions of the first alignment layer and the second alignment layer are parallel.
The technical scheme adopted for solving the technical problem of the invention is that the display device comprises a display panel and the display direction control panel, wherein the display direction control panel is arranged on the light emergent side of the display panel.
Optionally, the display panel comprises a third substrate; the third substrate is arranged opposite to the first substrate; a plurality of liquid crystal boxes are formed between the third substrate and the first substrate, the third substrate comprises a third base and a first display electrode positioned on one side of the third base, which faces the first base, and the first substrate further comprises a second display electrode positioned on one side of the first base, which faces the third base.
Optionally, the display device further comprises a third alignment layer covering the first display electrode and a fourth alignment layer covering the second display electrode, wherein the alignment directions of the third alignment layer and the second alignment layer are parallel, and the alignment directions of the fourth alignment layer and the second alignment layer are perpendicular.
Optionally, a first polarizer is further disposed on a side of the third substrate facing away from the first substrate, and a transmission axis direction of the first polarizer is parallel to an orientation direction of the fourth orientation layer; and a second polarizer is further arranged on one side of the second substrate, which is opposite to the first substrate, and the transmission axis direction of the second polarizer is parallel to the orientation direction of the first orientation layer.
Optionally, a backlight source is further disposed on a side of the first polarizer opposite to the third substrate, where the backlight source is configured to provide backlight to the third substrate, and light emitted from the backlight is collimated light.
Optionally, the backlight source includes a backlight substrate and a plurality of collimated light emitting elements disposed on one side of the backlight substrate facing the third substrate, and a layer of semi-transparent and semi-reflective layer is disposed on each of two sides of the third substrate.
The technical scheme adopted for solving the technical problem of the invention is a display direction control method, which is applied to the display direction control panel and comprises the following steps: providing a first voltage to each of the first display direction control lines and a second voltage to each of the second display direction control lines, wherein the first voltage and the second voltage have opposite polarities, and wherein: the first voltages supplied to the first display direction control lines are equal, and the second voltages supplied to the second display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the second display direction control lines; or the second voltages supplied to the second display direction control lines are equal, and the first voltages supplied to the first display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the first display direction control lines; or the first voltages supplied to the first display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the first display direction control lines, and the second voltages supplied to the second display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the second display direction control lines.
Drawings
FIG. 1 is a cross-sectional view of a display direction control panel according to an embodiment of the present invention;
FIG. 2 is a top view of a portion of the display direction control panel of FIG. 1;
FIG. 3 is a cross-sectional view of a display device according to an embodiment of the invention;
FIG. 4 is a light path diagram of a part of the structure of the display device shown in FIG. 3;
FIGS. 5a and 5b are optical path diagrams of different states of the display direction control panel shown in FIG. 1;
wherein the reference numerals are: 1. a first substrate; 11. a first display direction control line; 12. a first insulating layer; 1a, a color filter film; 1b a black matrix; 13. a second display electrode; 2. a second substrate; 21. a second display direction control line; 22. a second insulating layer; 3. a third substrate; 31. a semi-transparent semi-reflective layer; 32. a third insulating layer; 33. a first display electrode; 41. a first polarizer; 42. a second polarizer; 5. a backlight substrate; 51. a light reflecting member; 52. a light emitting member; e. the human eye; l1, a first liquid crystal layer; l2, liquid crystal box.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
referring to fig. 1, and with reference to fig. 2 and fig. 3, the present embodiment provides a display direction control panel, which includes a first substrate and a second substrate that are disposed opposite to each other, and a first liquid crystal layer L1 disposed therebetween, where the first substrate includes a first substrate 1 and a plurality of parallel first display direction control lines 11, the second substrate includes a second substrate 2 and a plurality of parallel second display direction control lines 21, the first display direction control lines 11 are disposed on a side of the first substrate 1 facing the second substrate 2, the second display direction control lines 21 are disposed on a side of the second substrate 2 facing the first substrate 1, and an extending direction of the first display direction control lines 11 is different from an extending direction of the second display direction control lines 21.
The plurality of first display direction control lines 11 can deflect the liquid crystal molecules in the regions facing them in different directions, and the plurality of second display direction control lines 21 can deflect the liquid crystal molecules in the regions facing them in different directions. Thereby, the states of the liquid crystal molecules in the respective different regions of the display direction control panel can be flexibly controlled. The deflection due to the liquid crystal molecules is overall equivalent to a prism having a certain tilt angle. The deflection of the liquid crystal molecules can be independently controlled in two different directions (namely the extending direction of the first display direction control line 11 and the extending direction of the second display direction control line 21) at each region position of the whole display direction control panel, so that the inclined planes of the prisms equivalent to the liquid crystal molecules in each different region are flexibly adjusted in two directions, light rays emitted to the display direction control panel can be flexibly adjusted in two directions, and then all light rays can be emitted towards one direction or all light rays are emitted towards one point. The detailed control method can be referred to in example 3.
Of course, the liquid crystal molecules in the first liquid crystal layer L1 may be selected from positive liquid crystals, and the liquid crystal molecules have a large deviation of refractive index as much as possible, and preferably have a deviation of refractive index greater than 0.3.
Alternatively, the distances of the adjacent first display direction control lines 11 from the first substrate 1 are different, the next adjacent first display direction control lines 11 are equidistant from the first substrate 1, no gap is present between the adjacent first display direction control lines 11 and the orthographic projection of the first substrate 1, and/or the distances of the adjacent second display direction control lines 21 from the second substrate 2 are different, the next adjacent second display direction control lines 21 are equidistant from the second substrate 2, and no gap is present between the adjacent second display direction control lines 21 and the orthographic projection of the second substrate 2.
It should be noted that, in the present embodiment, two display direction control lines are adjacent to each other, which means that the two display direction control lines are adjacent to each other in a direction parallel to the first substrate 1 or parallel to the second substrate 2; the two display direction control lines next neighbor in this embodiment, which means that they are next neighbor in a direction parallel to the first substrate 1 or parallel to the second substrate 2. Taking fig. 2 as an example, the first display direction control lines 11a and 11b are adjacent, and the first display direction control lines 11a and 11c are next-adjacent.
Referring to fig. 1 and 2, the first display direction control lines 11 are divided into two groups having different heights from the first substrate 1, and of course, the first display direction control lines 11 are insulated from each other by the first insulating layer 12. In an actual manufacturing process, a half number of the first display direction control lines 11 may be first formed on the first substrate 1 by using a patterning process, then the first insulating layer 12 covering the part of the first display direction control lines 11 is formed, then the other half number of the first display direction control lines 11 is formed by using a patterning process, and finally the gap of the part of the first display direction control lines 11 is filled. For example, the first display direction control lines 11a and 11c are closer to the first substrate 1, and the first display direction control lines 11d and 11b are farther from the first substrate 1.
The second display direction control lines 21 are divided into two groups whose heights from the second substrate 2 are different, and of course, the second display direction control lines 21 are insulated from each other by the second insulating layer 22. In an actual manufacturing process, a second half of the second display direction control lines 21 may be formed on the second substrate 2 by using a patterning process, then the second insulating layer 22 covering the portion of the second display direction control lines 21 may be formed, then another second half of the second display direction control lines 21 may be formed by using a patterning process, and finally the gap of the portion of the second display direction control lines 21 may be filled. For example, the second display direction control lines 21a and 21c are closer to the second substrate 2, and the second display direction control lines 21d and 21b are farther from the second substrate 2.
In the embodiment shown in fig. 2, there is an overlap region in the orthographic projections of adjacent first display direction control lines 11 on the first substrate 1. Of course, the orthographic projections of adjacent first display direction control lines 11 on the first substrate 1 may also be just level (i.e. there is no overlap or no gap between them).
If each of the first display direction control lines 11 or each of the second display direction control lines 21 is designed to be disposed in the same layer in a conventional design manner, a gap is necessarily disposed therebetween, an electric field at the gap is a fringe electric field, and the fringe electric field is relatively irregular, which causes irregularities in the deflection of liquid crystal molecules corresponding to the fringe electric field region, which is disadvantageous to the precise control of the display direction.
However, according to the present embodiment, the adjacent first display direction control line 11 and the adjacent second display direction control line 21 are free from a gap as viewed in the direction perpendicular to the first substrate 1. This makes the direction of the electric lines of force regular throughout most of the area of the display direction control panel, and there is no fringe electric field. The arrows in fig. 1 are schematic identifications of the power lines.
Optionally, the first direction is perpendicular to the second direction. According to the current view of fig. 1, the first direction is the left-right direction and the second direction is the direction perpendicular to the paper. The arrangement is such that the display direction is independently controlled in two independent directions parallel to the first substrate 1. Of course, the first direction and the second direction may be two directions intersecting obliquely.
Optionally, the display direction control panel further comprises a first alignment layer (not shown) covering the first display direction control line 11 and a second alignment layer (not shown) covering the second display direction control line 21, the alignment direction of the first alignment layer being parallel to the alignment direction of the second alignment layer. The arrangement is such that when each of the first display direction control lines 11 and each of the second display direction control lines 21 are not energized, the display direction control panel does not deflect the direction of light transmitted therethrough, and the transmittance reaches a maximum. Of course, the alignment direction of the first alignment layer and the alignment direction of the second alignment layer may be different theoretically.
Example 2:
the present embodiment provides a display device, including a display panel and the display direction control panel of embodiment 1, wherein the display direction control panel is disposed on the light emitting side of the display panel.
Preferably, the light emitted by the display panel is emitted in substantially one direction. If the light emitted by the display panel is divergent, the light paths of the sub-pixels can be designed so that the direction of the light emitted by each sub-pixel is substantially the same. Taking a liquid crystal display panel as an example, a TN type liquid crystal display panel is preferable. In the display device, the direction of the light emitted from the display panel to the display direction control panel after passing through the display direction control panel can be flexibly and accurately controlled.
Alternatively, referring to fig. 3, the display panel includes a third substrate; the third substrate is arranged opposite to the first substrate; a plurality of liquid crystal cells L2 are formed between the third substrate and the first substrate, the third substrate includes a third substrate 3 and a first display electrode 33 located on the third substrate 3 facing the first substrate 1, and the first substrate further includes a second display electrode 13 located on the first substrate 1 facing the third substrate 3.
The liquid crystal display panel generally includes a color film substrate and an array substrate which are opposite to each other. In this embodiment, the color filter substrate and the display direction control panel share the first substrate 1. The first substrate 1 is provided with a color filter 1a and a black matrix 1b on a side facing the third substrate.
Optionally, the display device further includes a third alignment layer (not shown) covering the first display electrode 33 and a fourth alignment layer (not shown) covering the second display electrode 13, the alignment directions of the third alignment layer and the second alignment layer are parallel, and the alignment directions of the fourth alignment layer and the second alignment layer are perpendicular. In this way, the alignment directions of the liquid crystal molecules in the liquid crystal display panel are the same, that is, the alignment of the liquid crystal molecules in each sub-pixel is the same. When the collimated light passes through the liquid crystal layer in the liquid crystal display panel, the propagation direction of the light is not deflected, and the light emitted from the liquid crystal display panel is still kept as the collimated light. Therefore, the display direction control panel is favorable for controlling the display direction.
Optionally, a first polarizer 41 is further disposed on a side of the third substrate facing away from the first substrate, and a transmission axis direction of the first polarizer 41 is parallel to an alignment direction of the fourth alignment layer; a second polarizer 42 is further disposed on a side of the second substrate facing away from the first substrate, and a transmission axis direction of the second polarizer 42 is parallel to an orientation direction of the first orientation layer. The purpose of the above arrangement is to make the black state (L0 gray-scale state) of the liquid crystal display panel sufficiently black.
The alignment direction of each alignment layer and the direction of the transmission axis of each polarizer can be flexibly adjusted.
Optionally, a backlight source is further disposed on a side of the first polarizer 41 opposite to the third substrate, where the backlight source is configured to provide backlight to the third substrate, and light emitted from the backlight is collimated light. The light emitting directions of the collimated light provided by the backlight source after passing through the TN type liquid crystal display panel are basically the same, so that the control of the display direction control panel on the display direction is facilitated.
Alternatively, referring to fig. 4, the backlight source includes a backlight substrate 5, and a plurality of collimated light emitting elements (specifically, a light reflecting member 51 and a light emitting member 52) disposed on one side of the backlight substrate 5 facing the third substrate 3, and a semi-transparent and semi-reflective layer 31 is disposed on each side of the third substrate 3. The light reflecting member 51 reflects the light emitted from the light emitting member 52 as collimated light toward the liquid crystal display panel. The transflective layer 31 causes the collimated light to reflect back and forth between the two transflective layers 31 and the backlight substrate 5 (which of course should include a light reflecting structure) and to exit in that transflective layer 31 adjacent to the liquid crystal cell L2. Thereby converting the point-like collimated light into substantially plane-uniform collimated light.
The semi-transparent and semi-reflective layer 31 may be a metal layer having a thickness less than a specific value. The material of the transflective layer 31 is not limited to metal.
Further, according to the principle of the fabry-perot resonator, the two semi-transparent and semi-reflective layers 31 form a resonator structure, and can also screen the light-emitting angle.
In fig. 3, the first display electrode 33 is, for example, a pixel electrode corresponding to each liquid crystal cell L2, and the second display electrode 13 is, for example, a common electrode. The third insulating layer 32 separates the first display electrode 33 from the transflective layer 31.
Example 3:
the present embodiment provides a display direction control method, applied to the display direction control panel, including: a first voltage is supplied to each first display direction control line 11, and a second voltage is supplied to each second display direction control line 21, wherein: the first voltages supplied to the first display direction control lines 11 are equal, and the second voltages supplied to the second display direction control lines 21 are sequentially increased in one direction perpendicular to the extending direction of the second display direction control lines 21; or the second voltages supplied to the second display direction control lines 21 are equal, and the first voltages supplied to the first display direction control lines 11 are sequentially increased in one direction perpendicular to the extending direction of the first display direction control lines 11; or the first voltage supplied to each first display direction control line 11 increases sequentially in one direction perpendicular to the extending direction of the first display direction control line 11, and the second voltage supplied to each second display direction control line 21 increases sequentially in one direction perpendicular to the extending direction of the second display direction control line 21.
Taking fig. 2 as an example, if the first voltages supplied to the first display direction control lines 11a to 11d are equal, and the voltage difference between the second voltages supplied to the second display direction control lines 21a to 21d and the first voltages decreases in sequence, the liquid crystal molecules in the region where the first display direction control lines 11a to 11d and the second display direction control lines 21a to 21d overlap in fig. 2 are equivalent to a prism having a bottom surface facing the first substrate 1 and a vertical surface passing through the second display direction control line 21a (or a top surface facing the second display direction control line 21 a). Wherein the larger the voltage difference of the voltages applied to the adjacent second display direction control lines 21, the steeper the slope of the prism, i.e. the larger the deflection angle of the light. The display effect shown in fig. 5a corresponds to this type of driving. The arrows in fig. 5a and 5b indicate the direction of the display light.
Of course, taking fig. 2 as an example, if the second voltages supplied to the second display direction control lines 21a to 21d are equal, and the voltage difference between the first voltage and the second voltage supplied to the first display direction control lines 11a to 11d is decreased in sequence, the liquid crystal molecules in the overlapping region of the first display direction control lines 11a to 11d and the second display direction control lines 21a to 21d in fig. 2 are equivalent to a prism whose bottom face faces the second substrate 2 and whose vertical face passes through the first display direction control line 11a (or whose top face faces the first display direction control line 11 a).
Also taking fig. 2 as an example, if the second voltages supplied to the second display direction control lines 21a to 21d are sequentially increased and the first voltages supplied to the first display direction control lines 11a to 11d are sequentially increased, the liquid crystal molecules in the region where the first display direction control lines 11a to 11d and the second display direction control lines 21a to 21d overlap in fig. 2 are equivalent to one tilted prism.
Because the voltages applied to each first display direction control line 11 and each second display direction control line 21 can be independently controlled, different regions of the whole display direction control panel can be equivalent to prisms with different inclination angles and different orientations, and therefore the light emitting directions of the light rays in different regions of the display panel after passing through the display direction control panel are independently controlled. Fig. 5b is an example, according to the current viewing angle, to realize such a display effect, only the light in the left area of the display panel needs to be controlled to be emitted toward the right eye e, and the light in the right area of the display panel needs to be controlled to be emitted toward the left eye e. Of course, this effect can be achieved in this case by supplying a driving voltage that first decreases and then increases from left to right to the type of display direction control line extending in the vertical direction of the first display direction control line 11 and the second display direction control line 21.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. The display device is characterized by comprising a display panel and a display direction control panel, wherein the display direction control panel is arranged on the light emergent side of the display panel; the display direction control panel comprises a first substrate, a second substrate and a first liquid crystal layer, wherein the first substrate and the second substrate are arranged oppositely, the first liquid crystal layer is positioned between the first substrate and the second substrate, the first substrate comprises a first base and a plurality of parallel first display direction control lines, the second substrate comprises a second base and a plurality of parallel second display direction control lines, the first display direction control lines are positioned on one side, facing the second base, of the first base, the second display direction control lines are positioned on one side, facing the first base, of the second base, and the extending direction of the first display direction control lines is different from that of the second display direction control lines;
the first display direction control lines adjacent to are at different distances from the first substrate, the first display direction control lines next adjacent to are at the same distance from the first substrate, no gap is present between the orthographic projection of the first substrate adjacent to the first display direction control lines, and/or the second display direction control lines adjacent to are at different distances from the second substrate, the second display direction control lines next adjacent to are at the same distance from the second substrate, no gap is present between the orthographic projection of the second substrate adjacent to the second display direction control lines;
the display panel comprises a third substrate; the third substrate is arranged opposite to the first substrate; a plurality of liquid crystal boxes are formed between the third substrate and the first substrate, the third substrate comprises a third base and a first display electrode positioned on one side of the third base, which faces the first base, and the first substrate further comprises a second display electrode positioned on one side of the first base, which faces the third base; the third substrate is back to one side of the first substrate is further provided with a backlight source, the backlight source is used for providing backlight for the third substrate, the light-emitting of the backlight is collimated light, the backlight source comprises a backlight substrate and a plurality of collimated light-emitting elements, the plurality of collimated light-emitting elements are arranged on one side of the backlight substrate, the backlight substrate faces towards the third substrate, and two sides of the third substrate are further respectively provided with a semi-transparent and semi-reflective layer.
2. The display device according to claim 1, wherein an extending direction of the first display direction control line is perpendicular to an extending direction of the second display direction control line.
3. A display device according to claim 1 or 2, wherein the display direction control panel further comprises a first alignment layer covering the first display direction control line and a second alignment layer covering the second display direction control line, the first alignment layer being parallel to the alignment direction of the second alignment layer.
4. The display device according to claim 3, further comprising a third alignment layer covering the first display electrode and a fourth alignment layer covering the second display electrode, wherein alignment directions of the third alignment layer and the second alignment layer are parallel, and alignment directions of the fourth alignment layer and the second alignment layer are perpendicular.
5. The display device according to claim 4, wherein a first polarizer is further provided on a side of the third substrate facing away from the first substrate, and a transmission axis direction of the first polarizer is parallel to an alignment direction of the fourth alignment layer; and a second polarizer is further arranged on one side of the second substrate, which is opposite to the first substrate, and the transmission axis direction of the second polarizer is parallel to the orientation direction of the first orientation layer.
6. A display direction control method applied to the display device according to any one of claims 1 to 5, comprising:
providing a first voltage to each of the first display direction control lines and a second voltage to each of the second display direction control lines, wherein:
the first voltages supplied to the first display direction control lines are equal, and the second voltages supplied to the second display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the second display direction control lines; or
The second voltages supplied to the second display direction control lines are equal, and the first voltages supplied to the first display direction control lines are sequentially increased along a direction perpendicular to the extending direction of the first display direction control lines; or
The first voltages supplied to the respective first display direction control lines are sequentially increased in one direction perpendicular to the extending direction of the first display direction control lines, and the second voltages supplied to the respective second display direction control lines are sequentially increased in one direction perpendicular to the extending direction of the second display direction control lines.
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| CN109143635A (en) * | 2018-10-25 | 2019-01-04 | 京东方科技集团股份有限公司 | Display device and display methods |
| CN109656064A (en) * | 2018-12-29 | 2019-04-19 | 武汉华星光电技术有限公司 | Liquid crystal display panel and display device |
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