Color reflection display panel and display device
By employing a single-layer color microcapsule pixel array and electrode thin-film transistor control in the color reflective display panel, the problems of large thickness in full-color LCD display modules and limited display modes in electronic paper have been solved, achieving both color and black-and-white display effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-13
AI Technical Summary
Existing full-color LCD display modules are thick, and electronic paper displays have a single display mode, making it impossible to achieve color display.
Design a color reflective display panel that employs a single-layer structure of color microcapsule pixel array. By utilizing the color phase and charged black particles within the color microcapsules, and through the control of electrodes and thin-film transistors, color and monochrome displays can be achieved.
Achieving color or monochrome display in a single-layer structure, the module features a clever structural design that is thin, stable, has a rapid signal response, and provides comprehensive color display.
Smart Images
Figure CN223993027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display technology, and in particular to a color reflective display panel and display device. Background Technology
[0002] Liquid crystal display (LCD) is a display technology based on the manipulation and control of liquid crystal molecules. By controlling the rotation of these molecules, the light transmittance is adjusted, thereby forming color images. LCD panels are characterized by stable display, long lifespan, and energy efficiency. However, LCD panels require a backlight. To achieve full-color display, the panel typically employs a three-layer cholesteric liquid crystal cell stacked structure, using the three layers of cholesteric liquid crystal to display blue, green, and red light respectively. This three-layer stacked structure results in a relatively large overall thickness of the LCD module. Furthermore, the three-layer stacked structure requires one-to-one pixel alignment, leading to complex manufacturing processes and higher raw material and production costs.
[0003] Electronic paper displays (reflective displays) utilize external light sources to display images, eliminating the need for a backlight. Information on the electronic paper remains clearly visible even in strong sunlight, without viewing angle issues. Due to their advantages such as energy efficiency, high reflectivity and contrast ratio, and low single-layer module thickness, electronic paper displays are now widely used in e-readers (e.g., e-books, e-newspapers) and other electronic components (e.g., price tags). Existing electronic paper displays typically employ E-Ink microcapsule technology (microcapsule electronic ink technology), SiPix microcup technology (microcup electrophoretic display technology), Bridgestone electronic liquid powder technology, Cholesteric Liquid Crystal Display (CLCD) technology, Microelectromechanical Systems (MEMS) technology, or electrowetting technology. However, current electronic paper display technologies have a limited display mode, only capable of displaying black and white, and cannot achieve color display.
[0004] Therefore, designing a single-layer ultra-thin display module that can display both black and white and full color is an urgent problem to be solved. Utility Model Content
[0005] The purpose of this application is to solve the problems of excessive thickness in existing full-color LCD display modules and limited display modes in black-and-white electronic paper display modules.
[0006] In a first aspect, this application provides a color reflective display panel, comprising: a first substrate, a second substrate disposed opposite to the first substrate, and a color microcapsule pixel array disposed between the first substrate and the second substrate. The color microcapsule pixel array is composed of a plurality of single-layer color microcapsules, each color microcapsule containing a color phase and charged black particles. The color phase is a cholesteric liquid crystal or a color electrophoretic solution. A first electrode is disposed on the side of the first substrate near the color microcapsule, and a second electrode is disposed on the side of the second substrate near the color microcapsule.
[0007] As a further improvement of this application, each pixel in the color microcapsule pixel array includes at least one color microcapsule.
[0008] As a further improvement of this application, a transparent partition is provided between each pixel in the color microcapsule pixel array.
[0009] As a further improvement of this application, a first thin-film transistor is disposed on the first substrate, and the first electrode is connected to the first thin-film transistor; a second thin-film transistor is disposed on the second substrate, and the second electrode is connected to the second thin-film transistor.
[0010] As a further improvement of this application, the first thin-film transistor and the second thin-film transistor are disposed opposite to each other, and a shielding plate is disposed on the side of the first substrate away from the colored microcapsule, the shielding plate being positioned corresponding to the first thin-film transistor.
[0011] As a further improvement of this application, the colored phase is a cholesteric liquid crystal, and the colored microcapsule is also provided with a transparent electrophoretic solution.
[0012] As a further improvement of this application, the colored phase is a colored electrophoretic solution, and the colored microcapsules are further provided with charged white particles, the white particles and the black particles having opposite charges.
[0013] As a further improvement of this application, the second electrode includes a first sub-electrode and a second sub-electrode.
[0014] As a further improvement of this application, a third thin-film transistor and a fourth thin-film transistor are disposed on the second substrate. The third thin-film transistor is connected to the side of the first sub-electrode away from the second sub-electrode, and the fourth thin-film transistor is connected to the side of the second sub-electrode away from the first sub-electrode.
[0015] Secondly, this application provides a display device including the aforementioned color reflective display panel.
[0016] The beneficial effects of this application are as follows: the novel color microcapsule designed in this application can selectively present internal color phases or black particles, and can realize the need for color display or black and white display in a single-layer structure. The module structure is ingeniously designed and has the characteristics of small thickness, stable display, fast signal response and comprehensive color display. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the color liquid crystal capsule of this application;
[0018] Figure 2 This is a schematic diagram of a color reflective display panel according to Embodiment 1 of this application;
[0019] Figure 3 This is a schematic diagram of a red display principle in Embodiment 1 of this application;
[0020] Figure 4 This is a schematic diagram of a green display principle in Embodiment 1 of this application;
[0021] Figure 5 This is a schematic diagram of another red display principle in Embodiment 1 of this application;
[0022] Figure 6 This is a schematic diagram of another green display principle in Embodiment 1 of this application;
[0023] Figure 7 This is a schematic diagram of the color electrophoresis solution capsule of this application;
[0024] Figure 8 This is a schematic diagram of a color reflective display panel according to Embodiment 2 of this application;
[0025] Figure 9 This is a schematic diagram of a green display principle in Embodiment 2 of this application;
[0026] Figure 10 This is a schematic diagram of another green display principle in Embodiment 2 of this application;
[0027] Figure 11 This is a schematic diagram of the white display principle in Embodiment 2 of this application.
[0028] In the diagram: 100, First architecture; 200, Second architecture; 101, First substrate; 102, Second substrate; 103, Shielding plate; 104, Separator; 111, First electrode; 112, Second electrode; 113, First thin-film transistor; 114, Second thin-film transistor; 115, First sub-electrode; 116, Second sub-electrode; 117, Third thin-film transistor; 118, Fourth thin-film transistor; 120, Colored liquid crystal capsule; 121, Capsule wall; 122, Cholesteric liquid crystal; 123, Black particles; 124, Transparent electrophoretic solution; 130, Colored electrophoretic solution capsule; 131, White particles; 132, Colored electrophoretic solution. Detailed Implementation
[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0032] Terminology Explanation:
[0033] Cholesteric liquid crystals possess two stable textures: the P-state (Planar) and the FC-state (Focal Conic). Neither requires a voltage to maintain its state. When cholesteric liquid crystals are in the P-state, their reflection spectrum is in the visible spectrum, and the liquid crystal exhibits bright colored light. When cholesteric liquid crystals are in the FC-state, they no longer reflect the aforementioned colored light, and light is scattered and transmitted. Under a certain electric field, these two states can interconvert, and both states can be maintained for a long time without a voltage. Cholesteric liquid crystals also possess the H-state (Homeotropic), which is transparent. This state is unstable and requires a voltage to maintain its state.
[0034] At zero voltage, cholesteric liquid crystals are in their initial state. When the cholesteric liquid crystal is in the P state, it is a reflective state, reflecting light of a specific color. Depending on the arrangement of the cholesteric liquid crystals, the reflected visible light spectrum differs, while the remaining spectrum is transmitted. The reflectance spectral band (Δλ) of a liquid crystal display is proportional to the helical moment (Po) and birefringence (Δn = ne - no) of the liquid crystal material.
[0035] Δλ = PoΔn,
[0036] When a voltage is applied across the two ends of a cholesteric liquid crystal in the P state and then slowly reduced to zero, the cholesteric liquid crystal molecules rotate and remain stationary in the FC state, which is a scattering state. At this time, the cholesteric liquid crystal does not reflect light of a specific color.
[0037] When a voltage is applied across the two ends of a cholesteric liquid crystal, the cholesteric liquid crystal is in the H state (Homeotropic, field-induced nematic phase), which is a transparent state. This state is unstable and requires a voltage to maintain it.
[0038] The wavelength of selectively reflected light by cholesteric liquid crystals is related to the pitch of the cholesteric liquid crystal. By changing the pitch of the cholesteric liquid crystal, the wavelength of reflected light can be controlled. For example, by adding a chiral agent to the cholesteric liquid crystal and adjusting the concentration of the chiral agent, different cholesteric liquid crystals that reflect red light, green light, and blue light can be formulated.
[0039] This application relates to a single-layer color reflective display panel that utilizes the selective presentation of color phases and black particles in novel microcapsules within the panel to achieve both color and monochrome displays. For example... Figure 2As shown, the color reflective display panel includes a first substrate 101, a second substrate 102 disposed opposite to the first substrate 101, and a color microcapsule pixel array disposed between the first substrate 101 and the second substrate 102. The color microcapsule pixel array is composed of R, G, and B pixels arranged sequentially, with the pixels spaced apart by transparent partitions 104. Each pixel includes at least one color microcapsule; for example, each pixel may contain one color microcapsule or two color microcapsules.
[0040] The colored microcapsule contains a colored phase and charged black particles 123, wherein the black particles 123 can carry either a positive or negative charge, and the colored phase can be either a cholesteric liquid crystal 122 or a colored electrophoretic fluid 132. Based on the type of colored phase, the colored microcapsules are classified into two types: colored liquid crystal capsules 120 and colored electrophoretic fluid capsules 130.
[0041] like Figure 1 As shown, the color liquid crystal capsule 120 includes a capsule wall 121, a cholesteric liquid crystal 122 disposed within the capsule wall, and charged black particles 123. The cholesteric liquid crystal 122 is initially in the P-state. A feasible color control scheme for the color liquid crystal capsule 120 is as follows: when the black particles 123 are stably positioned on the side of the color liquid crystal capsule 120 away from the display surface, the color (red, green, blue, or black) presented by the color liquid crystal capsule 120 can be adjusted by regulating the state (P-state or FC-state) of the cholesteric liquid crystal 122. Specifically: when the black particles 123 are stably positioned on the side of the color liquid crystal capsule 120 away from the display surface, and the cholesteric liquid crystal 122 is in the P-state, the color presented by the color liquid crystal capsule 120 is the red, blue, or green light reflected by the cholesteric liquid crystal 122; when the cholesteric liquid crystal 122 is in the FC-state, the color presented by the color liquid crystal capsule 120 is the black light after the light passes through the cholesteric liquid crystal 122 and is absorbed by the black particles 123.
[0042] The cholesteric liquid crystal 122 has a certain degree of fluidity. Another feasible color control scheme for the color liquid crystal capsule 120 is as follows: When the cholesteric liquid crystal 122 is in the P state, the color (red, green, blue, or black) displayed by the color liquid crystal capsule 120 is adjusted by controlling the black particles 123 to be either positioned at the top of the color liquid crystal capsule 120, blocking the cholesteric liquid crystal 122 (on the side of the black particles 123 closer to the display surface) or at the bottom of the color liquid crystal capsule 120, blocked by the cholesteric liquid crystal 122 (on the side of the black particles 123 farther from the display surface). Specifically, when the black particles 123 are stably positioned at the top of the color liquid crystal capsule 120, blocking the cholesteric liquid crystal 122, the color displayed by the color liquid crystal capsule 120 is black, where light is absorbed by the black particles 123; when the black particles 123 are stably positioned at the bottom of the color liquid crystal capsule 120, blocked by the cholesteric liquid crystal 122, the color displayed by the color liquid crystal capsule 120 is red, blue, or green, reflecting light from the cholesteric liquid crystal 122.
[0043] In some specific embodiments of this application, in order to improve the fluidity of the black particles 123 inside the color liquid crystal capsule 120, a transparent electrophoretic liquid 124 can also be provided inside the color liquid crystal capsule 120, which can improve the color change efficiency and stability without affecting the color presentation of the color liquid crystal capsule 120.
[0044] like Figure 7 As shown, the colored electrophoretic fluid capsule 130 includes a capsule wall 121, a colored electrophoretic fluid 132 disposed within the capsule wall, and charged black particles 123. The colored electrophoretic fluid 132 is red (composed of organic raw materials such as toluidine red), blue (composed of organic raw materials such as phthalocyanine blue), or green (composed of organic raw materials such as phthalocyanine green). The color control method of the colored electrophoretic fluid capsule 130 is as follows: by controlling the black particles 123 to be located at the top of the colored electrophoretic fluid capsule 130 and block the colored electrophoretic fluid 132, or to be located at the bottom of the colored electrophoretic fluid capsule 130 and blocked by the colored electrophoretic fluid 132, the color (red, green, blue, or black) presented by the colored electrophoretic fluid capsule 130 is adjusted. Specifically, when the black particles 123 are stably positioned at the top of the colored electrophoretic liquid capsule 130, blocking the colored electrophoretic liquid 132, the colored electrophoretic liquid capsule 130 displays the color of black, which is the color of light absorbed by the black particles 123; when the black particles 123 are stably positioned at the bottom of the colored electrophoretic liquid capsule 130, blocking the colored electrophoretic liquid 132, the colored electrophoretic liquid capsule 130 displays the color of red, blue, or green, which is the color of light reflected by the colored electrophoretic liquid 132.
[0045] In some specific embodiments of this application, in order to improve the white rendering effect of the color reflective display panel, charged white particles 131 can also be provided in the color electrophoretic liquid capsule 130. The white particles 131 have opposite charges to the black particles 123. When the black particles 123 are positively charged, the white particles 131 should be negatively charged. The color control scheme of the color electrophoretic fluid capsule 130 with white particles 131 is as follows: When the black particles 123 are stably positioned at the top of the color electrophoretic fluid capsule 130, blocking the color electrophoretic fluid 132 (the black particles 123 are on the side closer to the display surface), and the white particles 131 are on the side away from the display surface, the color of the color electrophoretic fluid capsule 130 is black, which is the color of light absorbed by the black particles 123; when both the black particles 123 and the white particles 131 are stably positioned at the bottom of the color electrophoretic fluid capsule 130 and blocked by the color electrophoretic fluid 132, the color of the color electrophoretic fluid capsule 130 is red, blue, or green, which is the color of light reflected by the color electrophoretic fluid 132; when the white particles 131 are stably positioned at the top of the color electrophoretic fluid capsule 130, blocking the color electrophoretic fluid 132 (the white particles 131 are on the side closer to the display surface), and the black particles 123 are on the side away from the display surface, the color of the color electrophoretic fluid capsule 130 is white, which is the color of light reflected by the white particles 131.
[0046] In some specific embodiments of this application, when the color microcapsule is a color liquid crystal capsule 120, a first electrode 111 is disposed on the side of the first substrate 101 near the color microcapsule, and a second electrode 112 is disposed on the side of the second substrate 102 near the color microcapsule. A first thin-film transistor 113 is also disposed on the first substrate 101, and the first electrode 111 is connected to the first thin-film transistor 113. A second thin-film transistor 114 is disposed on the second substrate 102, and the second electrode 112 is connected to the second thin-film transistor 114. By adjusting the voltage of the first electrode 111 or the second electrode 112, the position of the black particles 123 in the color liquid crystal capsule 120 (the side closer to the display surface or the side farther from the display surface) can be controlled, and the morphology (P state or FC state) of the cholesteric liquid crystal 122 can also be adjusted, thereby controlling the display color of the color liquid crystal capsule 120.
[0047] In some specific embodiments of this application, a shielding plate 103 is provided on the side of the first substrate 101 away from the color microcapsules. A first thin-film transistor 113 on the first substrate 101 and a second thin-film transistor 114 on the second substrate 102 are disposed opposite each other, and the shielding plate 103 corresponds to the position of the first thin-film transistor 113. The projections of the first thin-film transistor 113 and the second thin-film transistor 114 onto the first substrate 101 are both within the shielding plate 103. The shielding plate 103 is located between adjacent pixels, isolating sub-pixels and preventing color distortion or edge blurring caused by adjacent color mixing. This maintains color purity, improves color accuracy, and enhances color contrast. The shielding plate 103 can also shield non-transparent structures such as thin-film transistors and internal panel circuitry, preventing these structures from interfering with the displayed content and improving visibility.
[0048] In some specific embodiments of this application, the first electrode 111 is taken as the side of the first electrode 111 closer to the display surface relative to the second electrode 112. The first electrode 111 is transparent or translucent. The material of the first electrode 111 can be selected from one or more of IZO (Indium Zinc Oxide), ITO (Indium Tin Oxide), or AZO (Al-doping-ZnO). The second electrode 112 can be transparent, translucent, or opaque. When the second electrode 112 is transparent or translucent, the material of the second electrode 112 can be selected from one or more of ITO, IZO, or AZO. When the second electrode 112 is opaque, the material of the second electrode 112 can be selected from one or more of Ag (silver), Cu (copper), and Al (aluminum).
[0049] In some specific embodiments of this application, when the colored microcapsules are of the colored electrophoretic liquid type capsule 130, a first electrode 111 is disposed on the side of the first substrate 101 near the colored microcapsule, and a first sub-electrode 115 and a second sub-electrode 116 are disposed on the side of the second substrate 102 near the colored microcapsule, with the first sub-electrode 115 and the second sub-electrode 116 spaced apart. A first thin-film transistor 113 is also disposed on the first substrate 101, and the first electrode 111 is connected to the first thin-film transistor 113. A third thin-film transistor 117 and a fourth thin-film transistor 118 are disposed on the second substrate 102, with the third thin-film transistor 117 connected to the first sub-electrode 115 and the fourth thin-film transistor 118 connected to the second sub-electrode 116.
[0050] In a further improvement of this application, to achieve a more space-efficient circuit connection method, the first sub-electrode 115 and the second sub-electrode 116 are spaced apart. The third thin-film transistor 117 is connected to the side of the first sub-electrode 115 away from the second sub-electrode 116, and the fourth thin-film transistor 118 is connected to the side of the second sub-electrode 116 away from the first sub-electrode 115. In this configuration, the third thin-film transistor 117 in a pixel unit is close to the fourth thin-film transistor 118 in an adjacent pixel unit. During the circuit connection process, a middle line can be set at the interval between adjacent pixel units to simultaneously connect the thin-film transistors on both sides, significantly improving space utilization. Under this structural design, the shielding plate 103 can simultaneously shield the first thin-film transistor 113, the third thin-film transistor 117, and the fourth thin-film transistor 118, preventing the non-transparent thin-film transistors from interfering with the display content.
[0051] By adjusting the voltage of the first electrode 111, the first sub-electrode 115 and / or the second sub-electrode 116, the position of the black particles 123 and / or the white particles in the color electrophoretic liquid capsule 130 (to the side closer to the display surface or to the side farther from the display surface) can be controlled, thereby adjusting the display color of the color electrophoretic liquid capsule 130.
[0052] Example 1:
[0053] like Figure 2 As shown, in the feasible first architecture 100 of this application, the color reflective display panel includes a first substrate 101, a second substrate 102 disposed opposite to the first substrate 101, and a color microcapsule pixel array disposed between the first substrate 101 and the second substrate 102. The color microcapsule pixel array is composed of R, G, and B pixels arranged sequentially. Figure 2 The red, green, and blue colors correspond to the cholesteric liquid crystals in the color microcapsules. Pixels are arranged at intervals via transparent partitions 104, and each pixel includes two color liquid crystal capsules 120. A first electrode 111 is disposed on the side of the first substrate 101 near the color liquid crystal capsules 120, and a second electrode 112 is disposed on the side of the second substrate 102 near the color liquid crystal capsules 120. A first thin-film transistor 113 is also disposed on the first substrate 101, and the first electrode 111 is connected to the first thin-film transistor 113. A second thin-film transistor 114 is disposed on the second substrate 102, and the second electrode 112 is connected to the second thin-film transistor 114. Both the first electrode 111 and the second electrode 112 are made of ITO.
[0054] The first architecture 100 has two color display schemes:
[0055] Option 1:
[0056] like Figure 3As shown, the partial first architecture 100 includes red pixels, green pixels, and blue pixels from left to right. The color liquid crystal capsule 120 contains negatively charged black particles 123. When the first electrode 111 of the red pixel, located near the display surface, is adjusted to carry a negative voltage, and the second electrode 112, located away from the display surface, is adjusted to carry a positive voltage, the negatively charged black particles 123 in the red liquid crystal capsule move to the side away from the display surface. Light passing through the first substrate 101 and illuminating the red pixel is reflected as red light reflected by the P-state cholesteric liquid crystal. Similarly, when the first electrode 111 of the green and blue pixels, located near the display surface, is adjusted to carry a positive voltage, and the second electrode 112, located away from the display surface, is adjusted to carry a negative voltage, the negatively charged black particles 123 in the green and blue liquid crystal capsules move to the side near the display surface. Light passing through the first substrate 101 and illuminating the green and blue pixels is reflected as black light absorbed by the black particles. At this point, the first architecture 100 displays red text or patterns composed of all red pixels, and a black background composed of all green and blue pixels.
[0057] like Figure 4 As shown, the first architecture 100 can also be controlled to display green text or patterns composed of all green pixels, as well as a black background composed of all red and blue pixels. Its display principle is the same as that described above, and will not be repeated here.
[0058] like Figure 5 As shown, the partial first architecture 100 includes red pixels, green pixels, and blue pixels from left to right. The color liquid crystal capsule 120 contains black particles 123 with positive and negative charges. When the first electrode 111 of the red pixel near the display surface is adjusted to carry a positive voltage, and the second electrode 112 away from the display surface is adjusted to carry a negative voltage, the positively charged black particles 123 in the red liquid crystal capsule move to the side away from the display surface. Light passing through the first substrate 101 and illuminating the red pixel is reflected as red light reflected by the P-state cholesteric liquid crystal. Similarly, when the first electrode 111 of the green and blue pixels near the display surface is adjusted to carry a negative voltage, and the second electrode 112 away from the display surface is adjusted to carry a positive voltage, the positively charged black particles 123 in the green and blue liquid crystal capsules move to the side near the display surface. Light passing through the first substrate 101 and illuminating the green and blue pixels is reflected as black light absorbed by the black particles. At this point, the first architecture 100 displays red text or patterns composed of all red pixels, and a black background composed of all green and blue pixels.
[0059] Option 2:
[0060] like Figure 6As shown, the local first architecture 100, from left to right, includes red pixels, green pixels, and blue pixels. The color liquid crystal capsule 120 contains negatively charged black particles 123. The first electrode 111 of the red pixel, closer to the display surface, is adjusted to a higher negative voltage, and the second electrode 112, farther from the display surface, is adjusted to a higher positive voltage. The electric field strength between the first electrode 111 and the second electrode 112 is sufficient to transition the red cholesteric liquid crystal 122 from the P state to the FC state. At this time, the negatively charged black particles 123 in the red liquid crystal capsule move to the side farther from the display surface. Light passes through the first substrate 101, through the FC-state red cholesteric liquid crystal, and is absorbed by the black particles 123, appearing black. The same voltage setting makes the blue pixel also appear black. The second electrode 112 on the side of the green pixel furthest from the display surface is adjusted to carry a positive voltage, while the first electrode on the side closest to the display surface is not charged. At this time, the negatively charged black particles 123 in the red liquid crystal capsule move to the side furthest from the display surface. Light passes through the first substrate 101 and shines on the green pixel, and the reflected light is green light reflected by the P-state cholesteric liquid crystal. At this time, the first architecture 100 displays green text or patterns composed of all green pixels, and a black background composed of all red and blue pixels.
[0061] Example 2:
[0062] like Figure 8 As shown, in the feasible second architecture 200 of this application, the color reflective display panel includes a first substrate 101, a second substrate 102 disposed opposite to the first substrate 101, and a color microcapsule pixel array disposed between the first substrate 101 and the second substrate 102. The color microcapsule pixel array is composed of R, G, and B pixels arranged sequentially. Figure 8 (The colors red, green, and blue refer to the colors of the electrophoretic solution in the colored microcapsules.) Pixels are arranged at intervals by transparent partitions 104, and each pixel includes one electrophoretic solution capsule 130. Pixels are spaced apart by transparent partitions 104. A first electrode 111 is disposed on the side of the first substrate 101 near the electrophoretic solution capsule 130, and a first sub-electrode 115 and a second sub-electrode 116 are disposed at intervals on the side of the second substrate 102 near the electrophoretic solution capsule 130. A first thin-film transistor 113 is also disposed on the first substrate 101, and the first electrode 111 is connected to the first thin-film transistor 113. A third thin-film transistor 117 and a fourth thin-film transistor 118 are disposed on the second substrate 102. The third thin-film transistor 117 is connected to the side of the first sub-electrode 115 away from the second sub-electrode 116, and the fourth thin-film transistor 118 is connected to the side of the second sub-electrode 116 away from the first sub-electrode 115. The first electrode 111, the first sub-electrode 115, and the second sub-electrode 116 are all made of ITO.
[0063] The color display scheme for the second architecture 200 is as follows:
[0064] like Figure 9 As shown, the partial second architecture 200 includes red pixels, green pixels, and blue pixels from left to right. The color electrophoretic fluid capsule 130 contains negatively charged black particles 123 and positively charged white particles 131. When the first electrode 111 of the red pixel, located near the display surface, is adjusted to a positive voltage, and the first sub-electrode 115 and second sub-electrode 116, located away from the display surface, are adjusted to a negative voltage, the negatively charged black particles 123 in the red electrophoretic fluid capsule move to the side closer to the display surface, and the positively charged white particles 131 move to the side away from the display surface. Light passing through the first substrate 101 and illuminating the red pixel is absorbed by the black particles 123, resulting in a black color. The blue pixel is also made to appear black using the same voltage setting. The first sub-electrode 115 on the side of the green pixel furthest from the display surface is adjusted to carry a negative voltage, and the second sub-electrode 116 is adjusted to carry a positive voltage. The first electrode 111 on the side closest to the display surface is not charged. At this time, the negatively charged black particles 123 in the green electrophoretic fluid capsule move to the side closer to the second sub-electrode 116, and the positively charged white particles 131 move to the side closer to the first sub-electrode 115. When light shines through the first substrate 101 onto the green pixel, some of it is absorbed by the green electrophoretic fluid and reflected to appear green. At this time, the second architecture 200 displays the green text or pattern composed of all the green pixels, and the black background composed of all the red and blue pixels.
[0065] like Figure 10As shown, the colored electrophoretic fluid capsule 130 contains positively charged black particles 123 and negatively charged white particles 131. When the first electrode 111 of the red pixel, located near the display surface, is adjusted to carry a negative voltage, and the first sub-electrode 115 and the second sub-electrode 116, located away from the display surface, are adjusted to carry a positive voltage, the negatively charged black particles 123 in the red electrophoretic fluid capsule move to the side closer to the display surface, and the negatively charged white particles 131 move to the side away from the display surface. When light passes through the first substrate 101 and shines on the red pixel, it is absorbed by the black particles 123 and appears black. The same voltage setting is used to make the blue pixel appear black as well. When the first sub-electrode 115 of the green pixel, located away from the display surface, is adjusted to carry a positive voltage, and the second sub-electrode 116, located away from the display surface, is adjusted to carry a negative voltage, and the first electrode 111, located near the display surface, is not charged, the positively charged black particles 123 in the green electrophoretic fluid capsule move to the side closer to the second sub-electrode 116, and the negatively charged white particles 131 move to the side closer to the first sub-electrode 115. When light shines through the first substrate 101 onto the green pixels, some of it is absorbed by the green electrophoretic solution and reflected to appear green. At this time, the second architecture 200 displays the green text or pattern composed of all the green pixels, and the black background composed of all the red and blue pixels.
[0066] like Figure 11 As shown, the second architecture 200 displays white by adjusting the first electrode 111 on the side closer to the display surface in the red pixel to carry a negative voltage, and adjusting the first sub-electrode 115 and the second sub-electrode 116 on the side farther from the display surface to carry a positive voltage. At this time, the negatively charged black particles 123 in the red electrophoretic capsule move to the side farther from the display surface, and the positively charged white particles 131 move to the side closer to the display surface. Light shines through the first substrate 101 onto the red pixel and is reflected by the white particles 131 to appear white. With this voltage control method, the second architecture 200 can be displayed in a completely white style or in a style with white text / patterns, black / red / green / blue background.
[0067] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A color reflective display panel, characterized by, The application relates to a color reflective display panel, which comprises a first substrate, a second substrate arranged opposite to the first substrate, and a color microcapsule pixel array arranged between the first substrate and the second substrate, wherein the color microcapsule pixel array is composed of a plurality of color microcapsule single-layer arrays, the color microcapsule is provided with a color phase and charged black particles, the color phase is cholesteric phase liquid crystal or color electrophoretic liquid, the first substrate is provided with a first electrode on the side close to the color microcapsule, and the second substrate is provided with a second electrode on the side close to the color microcapsule. Each pixel in the color microcapsule pixel array comprises at least one color microcapsule.
2. The color reflective display panel of claim 1, wherein, Transparent partitions are arranged between each pixel in the color microcapsule pixel array.
3. The color reflective display panel of claim 1, wherein, The first substrate is provided with a first thin film transistor, the first electrode is connected with the first thin film transistor, the second substrate is provided with a second thin film transistor, and the second electrode is connected with the second thin film transistor.
4. The color reflective display panel of claim 1, wherein, The first thin film transistor is arranged opposite to the second thin film transistor, the first substrate is provided with a shielding plate on the side far from the color microcapsule, and the shielding plate is in position correspondence with the first thin film transistor.
5. The color reflective display panel of claim 4, wherein, The color phase is cholesteric phase liquid crystal, and the color microcapsule is further provided with transparent electrophoretic liquid.
6. The color reflective display panel according to any one of claims 1 to 5, characterized in that, The color phase is color electrophoretic liquid, the color microcapsule is further provided with charged white particles, and the white particles and the black particles have opposite charges.
7. The color reflective display panel according to any one of claims 1 to 3, characterized in that, The second electrode comprises a first sub-electrode and a second sub-electrode.
8. The color reflective display panel of claim 7, wherein, The second substrate is provided with a third thin film transistor and a fourth thin film transistor, the third thin film transistor is connected to the side of the first sub-electrode far from the second sub-electrode, and the fourth thin film transistor is connected to the side of the second sub-electrode far from the first sub-electrode.
9. The color reflective display panel of claim 8, wherein, The application further relates to a color reflective display panel comprising the color reflective display panel as claimed in any one of claims 1 to 9.
10. A display device, characterized by comprising: