CN117111367A - Display device - Google Patents

Display device Download PDF

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Publication number
CN117111367A
CN117111367A CN202210529416.7A CN202210529416A CN117111367A CN 117111367 A CN117111367 A CN 117111367A CN 202210529416 A CN202210529416 A CN 202210529416A CN 117111367 A CN117111367 A CN 117111367A
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CN
China
Prior art keywords
electrode
voltage input
voltage
display
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210529416.7A
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Chinese (zh)
Inventor
向瑞杰
陈志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acer Inc
Original Assignee
Acer Inc
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Filing date
Publication date
Application filed by Acer Inc filed Critical Acer Inc
Priority to CN202210529416.7A priority Critical patent/CN117111367A/en
Publication of CN117111367A publication Critical patent/CN117111367A/en
Pending legal-status Critical Current

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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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1391—Bistable or multi-stable liquid crystal cells
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention provides a display, which comprises a first substrate, a second substrate, a first electrode, a second electrode and a display medium layer. The first substrate and the second substrate are arranged opposite to each other. The first electrode covers the first substrate in a whole surface manner, and is provided with a first voltage input end, a second voltage input end and a third voltage input end. The first voltage input end and the second voltage input end are respectively positioned at two opposite side edges of the first electrode. The third voltage input terminal is located between the first voltage input terminal and the second voltage input terminal. The second electrode covers the second substrate in a whole area, and is provided with a fourth voltage input end and a fifth voltage input end. The fourth voltage input end and the fifth voltage input end are respectively positioned at two opposite side edges of the second electrode. The display medium layer is arranged between the first electrode and the second electrode.

Description

Display device
Technical Field
The present invention relates to a display, and more particularly, to a display with radial gradation display effect.
Background
A bistable display (bistable display) is a display using a bistable medium, and the technology to achieve bistable display includes electronic Ink (E-Ink) display, cholesterol liquid crystal display (cholesteric liquid crystal display, chLCD), electrophoretic display (EPD), electrowetting display (electrowetting display, EWD) or quick response liquid powder display (QR-LPD) display technologies.
Because bistable displays have lower operation energy consumption and better flexibility than mainstream displays (such as liquid crystal displays or light emitting diode displays), they are suitable for portable electronic products (such as electronic papers or electronic books) and can be applied to housings or car bodies of various electronic products to achieve the effect of changing visual appearance. However, the bistable display cannot generate a radially graded gray level display effect due to the conventional driving method.
Disclosure of Invention
The invention is directed to a display which can achieve a radial gradation display effect.
According to an embodiment of the invention, a display comprises a first substrate, a second substrate, a first electrode, a second electrode and a display medium layer. The first substrate and the second substrate are arranged opposite to each other. The first electrode covers the first substrate in a whole surface manner, and is provided with a first voltage input end, a second voltage input end and a third voltage input end. The first voltage input end and the second voltage input end are respectively positioned at two opposite side edges of the first electrode. The third voltage input terminal is located between the first voltage input terminal and the second voltage input terminal. The second electrode covers the second substrate in a whole area, and is provided with a fourth voltage input end and a fifth voltage input end. The fourth voltage input end and the fifth voltage input end are respectively positioned at two opposite side edges of the second electrode. The display medium layer is arranged between the first electrode and the second electrode.
In the display according to the embodiment of the invention, the first voltage input terminal, the second voltage input terminal, the third voltage input terminal, the fourth voltage input terminal and the fifth voltage input terminal are respectively used for inputting the first voltage, the second voltage, the third voltage, the fourth voltage and the fifth voltage. The third voltage is greater than or less than the first voltage and the second voltage, and the fourth voltage is different from the fifth voltage.
In the display according to the embodiment of the invention, the display further includes a third electrode and a first insulating layer. The third electrode is arranged on one side of the first electrode, which is away from the second electrode. The third electrode has a first end and a first extension. The first end is a third voltage input end. The first extension portion extends from the first end portion to a side edge of the first substrate. The first insulating layer is disposed between the first extension and the first electrode.
In the display according to the embodiment of the invention, the third electrode and the first insulating layer are located between the first substrate and the first electrode. The first insulating layer covers the third electrode, and the first end part penetrates through the first insulating layer to electrically contact the first electrode.
In the display according to the embodiment of the invention, the third electrode and the first insulating layer are located at a side of the first substrate facing away from the first electrode. The first insulating layer is positioned between the first substrate and the first extension part, and the first end part of the third electrode is electrically coupled to the first electrode.
In the display according to the embodiment of the invention, the first electrode, the third electrode and the first insulating layer are positioned on one side of the first substrate facing away from the display medium layer, and the first end portion of the third electrode is electrically contacted with the first electrode.
In the display according to the embodiment of the invention, the display further includes a fourth electrode and a second insulating layer. The fourth electrode is arranged on one side of the second electrode, which is away from the first electrode. The fourth electrode has a second end and a second extension. The second extension part extends from the second end part to one side edge of the second substrate. The second insulating layer is disposed between the second extension and the second electrode. The second electrode is also provided with a sixth voltage input end positioned between the fourth voltage input end and the fifth voltage input end, and the second end part of the fourth electrode is the sixth voltage input end.
In the display according to the embodiment of the invention, the first voltage input terminal, the second voltage input terminal, the third voltage input terminal, the fourth voltage input terminal, the fifth voltage input terminal and the sixth voltage input terminal are respectively used for inputting the first voltage, the second voltage, the third voltage, the fourth voltage, the fifth voltage and the sixth voltage. The third voltage is greater than or less than the first voltage and the second voltage, and the sixth voltage is greater than or less than the fourth voltage and the fifth voltage.
In the display according to the embodiment of the invention, the display further comprises a first flexible circuit board and a second flexible circuit board. The second electrode is further provided with a sixth voltage input terminal located between the fourth voltage input terminal and the fifth voltage input terminal. The first substrate, the first electrode and the display medium layer are provided with openings. The opening exposes the sixth voltage input terminal of the second electrode. The first flexible circuit board is electrically connected to the third voltage input end. The second flexible circuit board is electrically connected with the sixth voltage input end through the opening.
In the display according to the embodiment of the invention, the opening further exposes the third voltage input end of the first electrode, and the first flexible circuit board is electrically connected with the third voltage input end through the opening.
In a display according to an embodiment of the invention, the first electrode is arranged at a side of the first substrate facing away from the display medium layer.
In a display according to an embodiment of the invention, the first substrate, the display medium layer and the first electrode have openings. The display also includes a light guiding structure, a light source, and a patterned ink layer. The patterning ink layer is arranged on the second substrate and overlapped with the opening. The light guiding structure protrudes into the aperture and is adapted to guide light from the light source through the patterned ink layer.
In a display according to an embodiment of the invention, the material of the display medium layer comprises a bistable material.
In view of the foregoing, in the display according to an embodiment of the invention, two surfaces of the two substrates opposite to each other are respectively covered with two electrodes entirely, and two opposite side edges of each of the two electrodes are respectively provided with two voltage input terminals. The display medium layer inserted between the two electrodes can achieve the radial gradual gray scale display effect by arranging the other voltage input end which can be independently controlled between the two voltage input ends of one electrode.
Drawings
FIG. 1 is a schematic top view of a display according to a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the display of FIG. 1;
FIG. 3 is an equivalent circuit schematic of the display of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a display according to a second embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of a display according to a third embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of a display of a fourth embodiment of the invention;
FIG. 7 is an equivalent circuit schematic of the display of FIG. 6;
FIG. 8 is a schematic top view of a display according to a fifth embodiment of the invention;
FIG. 9 is a schematic cross-sectional view of the display of FIG. 8;
FIG. 10is a schematic cross-sectional view of a display of a sixth embodiment of the invention;
FIG. 11 is a schematic top view of a display according to a seventh embodiment of the invention;
fig. 12 is a schematic cross-sectional view of the display of fig. 11.
Description of the reference numerals
10. 10A, 10B, 10C, 20A, 30: a display;
101. 101A: a first substrate;
101e, 102e, 110e1, 110e2, 120e1, 120e2: a side edge;
101s1, 102s1: a surface;
102: a second substrate;
110. 110A, 110B, 110C: a first electrode;
110in1, 110in2, 110in3, 110in4, 110in5, 120in1, 120in2, 120in3, 120in4, 120in5: a voltage input terminal;
115. 115A, 125: an insulating layer;
120: a second electrode;
130. 130A: a third electrode;
131. 141: an end portion;
133. 143: an extension;
140: a fourth electrode;
200. 200A: a display medium layer;
210: a microcapsule;
220: electronic ink;
221: white particles;
222: black particles;
223: a transparent liquid;
311. 312, 313, 314, 321, 322, 321A, 322A, 450: a flexible circuit board;
410: a light guiding structure;
410es: a light-emitting surface;
410is: a light incident surface;
411: a light guide plate;
413: a light guide column;
420: a light source;
430: patterning the ink layer;
LB: light rays;
OP, OP': opening holes;
v1: a first voltage;
v2: a second voltage;
v3: a third voltage;
v4: a fourth voltage;
v5: a fifth voltage;
v6: a sixth voltage;
A-A ', B-B ', C-C ': and (5) cutting.
Detailed Description
In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrically connected" may mean that there are other components between the two components.
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic top view of a display according to a first embodiment of the invention. Fig. 2 is a schematic cross-sectional view of the display of fig. 1. Fig. 3 is an equivalent circuit diagram of the display of fig. 2. Fig. 2 corresponds to the section line A-A' of fig. 1. Referring to fig. 1 and 2, the display 10 includes a first substrate 101, a second substrate 102, a first electrode 110, a second electrode 120, and a display medium layer 200. The first substrate 101 and the second substrate 102 are disposed opposite to each other. The first electrode 110 covers the first substrate 101 entirely. The second electrode 120 covers the second substrate 102 entirely. The display medium layer 200 is disposed between the first substrate 101 and the second substrate 102. In the present embodiment, the first electrode 110 and the second electrode 120 are disposed on the surface 101s1 and the surface 102s1 of the first substrate 101 and the second substrate 102, respectively, but not limited thereto.
The materials of the first substrate 101 and the second substrate 102 may include glass, quartz, high molecular polymers (such as polyimide, polycarbonate or polyethylene terephthalate), or other flexible plates with high light transmittance. The first electrode 110 and the second electrode 120 are, for example, light-transmitting electrodes, and the material of the light-transmitting electrodes includes metal oxides, for example: indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, or other suitable oxides, or a stack of at least two of the foregoing, but is not limited thereto. In some embodiments, the first electrode 110 and/or the second electrode 120 may be made of a metal material (e.g., molybdenum, aluminum, copper, etc.).
The display medium layer 200 may include a plurality of microcapsules (microcapsules) 210 and an electronic ink 220 filled within the microcapsules 210. Electronic ink 220 optionally includes a plurality of white particles 221, a plurality of black particles 222, and a transparent liquid 223, and one of white particles 221 and black particles 222 may be positively charged while the other is negatively charged. That is, in the present embodiment, the material of the display medium layer 200 may be an electrophoretic display (Electrophoretic Display, EPD) material.
However, the present invention is not limited thereto. According to other embodiments, the display medium layer may also be a liquid powder display (Liquid Powder Display, LPD) material, a cholesteric liquid Crystal (Cholesteric Liquid-Crystal, CLC) material, a microelectromechanical system (Microelectromechanical Systems, MEMS), an electrochromic display (Electrochromic Display, ECD) material, a Polymer-dispersed liquid Crystal (Polymer-Dispersed Liquid Crystal, PDLC) material, or other suitable bistable medium.
Further, the first electrode 110 and the second electrode 120 may be provided with a plurality of voltage inputs. For example, the opposite side edges 110e1, 110e2 of the first electrode 110 may be provided with a voltage input 110in1, a voltage input 110in2, a voltage input 110in3 and a voltage input 110in4, while the opposite side edges 120e1, 1202e2 of the second electrode 120 may be provided with a voltage input 120in1, a voltage input 120in2, a voltage input 120in3 and a voltage input 120in4.
In this embodiment, the display 10 may further include a third electrode 130 disposed on a side of the first electrode 110 facing away from the second electrode 120. The third electrode 130 has an end 131 and an extension 133. The end 131 may be disposed generally on the first substrate 101 at a location remote from the substrate edge, such as the geometric center of the first substrate 101 (as shown in fig. 1) or at other locations offset from the geometric center and remote from the substrate edge.
On the other hand, the extension portion 133 may extend from the end portion 131 to the side edge 101e of the first substrate 101, and an insulating layer 115 is disposed between the extension portion 133 of the third electrode 130 and the first electrode 110. In order to reduce the capacitive coupling effect between the extension 133 of the third electrode 130 and the first electrode 110, the material of the insulating layer 115 may be selected from insulating materials having a high dielectric constant. For example, in the present embodiment, the third electrode 130 and the insulating layer 115 are located between the first substrate 101 and the first electrode 110, the insulating layer 115 covers the third electrode 130, and the end 131 of the third electrode 130 penetrates the insulating layer 115 to electrically contact the first electrode 110, but not limited thereto.
Since the end portion 131 of the third electrode 130 is electrically contacted with the first electrode 110 at the geometric center of the first substrate 101, the end portion 131 may serve as another voltage input terminal of the first electrode 110 at or near the geometric center of the first substrate 101. Referring to fig. 3, for example, the voltage input terminal 110in1 (or the voltage input terminal 110in 3) located at the side edge 110e1 of the first electrode 110 can be used as a first voltage input terminal for inputting the first voltage V1. The voltage input terminal 110in2 (or the voltage input terminal 110in 4) located at the other side edge 110e2 of the first electrode 110 may be used as a second voltage input terminal for inputting the second voltage V2. The end 131 of the third electrode 130 between the first voltage input terminal and the second voltage input terminal may then serve as a third voltage input terminal for inputting a third voltage V3.
Similarly, the voltage input terminal 120in1 (or the voltage input terminal 120in 3) located at the side edge 120e1 of the second electrode 120 may be used as a fourth voltage input terminal for inputting the fourth voltage V4. The voltage input terminal 120in2 (or the voltage input terminal 120in 4) located at the other side edge 120e2 of the second electrode 120 may be used as a fifth voltage input terminal for inputting the fifth voltage V5.
In the present embodiment, when the display 10is enabled to display, the third voltage V3 input to the first electrode 110 may be greater than or less than the first voltage V1 and the second voltage V2, and the fourth voltage V4 input to the second electrode 120 is different from the fifth voltage V5. That is, the potential distribution on the first electrode 110 increases or decreases from the third voltage input terminal (i.e., the end 131 of the third electrode 130) to the first voltage input terminal and the second voltage input terminal at both sides, and the potential distribution on the second electrode 120 increases or decreases from the fourth voltage input terminal at one side 120e1 to the fifth voltage input terminal at the other side 120e 2. Accordingly, the display medium layer 200 interposed between the first electrode 110 and the second electrode 120 can achieve a radially gradation display effect.
As shown in fig. 1, the gray scale of the display 10 may exhibit a radial gray scale increasing effect, which is an increasing effect around the end 131 of the third electrode 130 (i.e., the third voltage input end of the first electrode 110). By adjusting the relative magnitude relation between the third voltage V3 and the first voltage V1 and the second voltage V2, the gray scale displayed on the display 10 can be displayed with a radial display effect gradually decreasing from the end 131 of the third electrode 130 (or the geometric center of the first substrate 101) to the surrounding.
In this embodiment, the display 10 further includes a flexible circuit board 311, a flexible circuit board 312, a flexible circuit board 313 and a flexible circuit board 314. For example, each of the flexible circuit boards may have two sets of bonding pins, one set of pins may be electrically connected to one voltage input terminal of the first electrode 110, and the other set of pins may be electrically connected to one voltage input terminal of the second electrode 120. For example: one set of bonding pins of the flexible circuit board 311 is electrically connected to the voltage input terminal 110in1 on the first electrode 110, while the other set of bonding pins is electrically connected to the voltage input terminal 120in1 on the second electrode 120, and so on, but not limited thereto.
Other embodiments will be listed below to describe the present disclosure in detail, wherein like components will be denoted by like reference numerals, and descriptions of the same technical content will be omitted, and reference is made to the foregoing embodiments for parts, and the description thereof will not be repeated.
Fig. 4 is a schematic cross-sectional view of a display according to a second embodiment of the invention. Referring to fig. 4, the difference between the display 10A of the present embodiment and the display 10 of fig. 2 is that: the third electrode and the insulating layer are arranged in different ways. Specifically, the third electrode 130A and the insulating layer 115A of the display 10A are disposed on a side of the first substrate 101 facing away from the first electrode 110, and the insulating layer 115A is located between the first substrate 101 and the extension 133 of the third electrode 130A. It is noted that, in the present embodiment, the end 131 of the third electrode 130A is not directly electrically contacted to the first electrode 110, but is electrically coupled to the first electrode 110. That is, the end 131 of the third electrode 130A changes the charge distribution of the first electrode 110 near the end 131 via the capacitive coupling effect, thereby changing the potential thereat.
Fig. 5 is a schematic cross-sectional view of a display according to a third embodiment of the invention. Referring to fig. 5, the difference between the display 10B of the present embodiment and the display 10A of fig. 4 is that: the first electrodes are arranged in different ways. Specifically, the first electrode 110A, the third electrode 130A, and the insulating layer 115A of the display 10B are disposed on a side of the first substrate 101 facing away from the display medium layer 200. Unlike the third electrode 130A of fig. 4, which is electrically coupled to the first electrode 110, the end 131 of the third electrode 130A of the present embodiment is directly electrically contacted with the first electrode 110A also located outside the first substrate 101.
Fig. 6 is a schematic cross-sectional view of a display according to a fourth embodiment of the invention. Fig. 7 is an equivalent circuit diagram of the display of fig. 6. Referring to fig. 6 and 7, the difference between the display 10C of the present embodiment and the display 10 of fig. 2 is that: the display 10C further includes a fourth electrode 140 and an insulating layer 125. Wherein the fourth electrode 140 is disposed on a side of the second electrode 120 facing away from the first electrode 110, and has an end 141 and an extension 143. Similar to the third electrode 130, the end 141 of the fourth electrode 140 may be disposed generally on the second substrate 102 and away from the substrate edge, such as the geometric center of the second substrate 102 (as shown in fig. 6) or other locations offset from the geometric center and away from the substrate edge.
On the other hand, the extension portion 143 may extend from the end portion 141 to the side edge 102e of the second substrate 102, and an insulating layer 125 is disposed between the extension portion 143 of the fourth electrode 140 and the second electrode 120. In order to reduce the capacitive coupling effect between the extension portion 143 of the fourth electrode 140 and the second electrode 120, the material of the insulating layer 125 may be selected from insulating materials having a high dielectric constant. For example, in the present embodiment, the fourth electrode 140 and the insulating layer 125 are located between the second substrate 102 and the second electrode 120, the insulating layer 125 covers the fourth electrode 140, and the end 141 of the fourth electrode 140 penetrates the insulating layer 125 to electrically contact the second electrode 120, but not limited thereto.
Since the end portion 141 of the fourth electrode 140 is electrically contacted with the second electrode 120 at the geometric center of the second substrate 102, the end portion 141 can be used as another voltage input terminal of the second electrode 120 at or near the geometric center of the second substrate 102. For example, the end 141 of the fourth electrode 140 between the fourth voltage input terminal and the fifth voltage input terminal may serve as a sixth voltage input terminal for inputting a sixth voltage V6 (as shown in fig. 7).
In the present embodiment, when the display 10C is enabled to display, the third voltage V3 input to the first electrode 110 may be greater than or less than the first voltage V1 and the second voltage V2, and the sixth voltage V6 input to the second electrode 120 may be greater than or less than the fourth voltage V4 and the fifth voltage V5. That is, the potential distribution on the first electrode 110 increases or decreases from the third voltage input end (i.e., the end 131 of the third electrode 130) to the first voltage input end and the second voltage input end at both sides, and the potential distribution on the second electrode 120 increases or decreases from the sixth voltage input end (i.e., the end 141 of the fourth electrode 140) to the fourth voltage input end and the fifth voltage input end at both sides. Accordingly, the display medium layer 200 interposed between the first electrode 110 and the second electrode 120 can achieve a radially gradation display effect.
Fig. 8 is a schematic top view of a display according to a fifth embodiment of the invention. Fig. 9 is a schematic cross-sectional view of the display of fig. 8. Fig. 10is a schematic cross-sectional view of a display of a sixth embodiment of the invention. Fig. 9 corresponds to the section line B-B' of fig. 8.
Referring to fig. 8 and 9, the difference between the display 20 of the present embodiment and the display 10 of fig. 1 and 2 is that: the first substrate 101A, the first electrode 110B and the display medium layer 200A of the display 20 have openings OP. The opening OP may be substantially located at or near the geometric center of the first substrate 101A, and exposes the voltage input terminal 110in5 (i.e., the third voltage input terminal) of the first electrode 110B and the voltage input terminal 120in5 (i.e., the sixth voltage input terminal) of the second electrode 120. It is particularly noted that, in the present embodiment, the display 20 is not provided with the third electrode 130 and the fourth electrode 140 as shown in fig. 6 as the third voltage input terminal of the first electrode 110B and the sixth voltage input terminal of the second electrode 120.
In addition, the display 20 further includes a flexible circuit board 321 (i.e., a first flexible circuit board) and a flexible circuit board 322 (i.e., a second flexible circuit board). In this embodiment, the two flexible circuit boards are electrically connected to the third voltage input terminal and the sixth voltage input terminal through the openings OP, respectively. However, the present invention is not limited thereto. As shown in fig. 10, in the display 20A of another embodiment, the first electrode 110C and the voltage input terminal 110in5 thereof may be disposed on the side of the first substrate 101A facing away from the display medium layer 200A. Therefore, in this embodiment, the flexible circuit board 321 can be electrically connected to the voltage input terminal 110in5 without extending into the opening OP.
Except for the above-mentioned differences, since other components and their configuration relationships in the display 20 of fig. 8 and 9 and the display 20A of fig. 10 are similar to those of the display 10 of fig. 2, the detailed description is made in the related paragraphs of the foregoing embodiments, and the detailed description is omitted here.
Fig. 11 is a schematic top view of a display according to a seventh embodiment of the invention. Fig. 12 is a schematic cross-sectional view of the display of fig. 11. Fig. 12 corresponds to the section line C-C' of fig. 11. Referring to fig. 11 and 12, in the display 30 of the present embodiment, the first substrate 101A, the first electrode 110B and the display medium layer 200A have an opening OP ", and the opening OP" may be located substantially at or near the geometric center of the first substrate 101A.
Unlike the previous embodiments, display 30 also includes light guiding structure 410, light source 420, and patterned ink layer 430. The patterned ink layer 430 is disposed on the second substrate 102 and overlaps the openings OP. For example, the display 30 may further include a transparent cover plate 410, and the patterned ink layer 430 may be directly printed on the transparent cover plate 410, but is not limited thereto.
Light directing structure 410 extends into aperture OP "and is adapted to direct light LB from light source 420 through patterned ink layer 430. In detail, the light guide structure 410 may include a light guide plate 411 and a light guide column 413. The light guide posts 413 are connected to the light emitting surface 410es of the light guide plate 411 facing the patterned ink layer 430. The light source 420 is disposed on one side of the light incident surface 410is of the light guide plate 411, and can perform light emitting control through the flexible circuit board 450.
For example, in the present embodiment, the flexible circuit board 321A and the flexible circuit board 322A bonded to the first substrate 101A near the opening op″ are electrically connected to the third voltage input terminal (not shown) of the first electrode 110B and/or the sixth voltage input terminal (not shown) of the second electrode 120, optionally via suitable conductive structures (not shown), so as to achieve a radial gradation effect (as shown in fig. 11) for displaying gray scale. It is specifically noted that the arrangement of the voltage input terminal of the first electrode 110B and/or the second electrode 120 at the geometric center of the first substrate 101A in this embodiment may also be performed by using the implementation manner of any of the foregoing embodiments. Therefore, please refer to the relevant paragraphs of the foregoing embodiments for detailed description, and the detailed description is omitted here.
As shown in fig. 11, a light guide structure 410 and a patterned ink layer 430 are disposed at the radial center of the gradation display to display a predetermined pattern, and thus, an optimal visual effect such as a brand logo (logo) can be highlighted.
In summary, in the display according to an embodiment of the invention, two opposite surfaces of the two substrates are covered with two electrodes respectively, and two opposite side edges of the two electrodes are respectively provided with two voltage input ends. The display medium layer inserted between the two electrodes can achieve the radial gradation display effect by arranging the other voltage input end which can be independently controlled between the two voltage input ends of one electrode.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (13)

1. A display, comprising:
the first substrate and the second substrate are arranged opposite to each other;
the first electrode covers the first substrate entirely and is provided with a first voltage input end, a second voltage input end and a third voltage input end, wherein the first voltage input end and the second voltage input end are respectively positioned at two opposite side edges of the first electrode, and the third voltage input end is positioned between the first voltage input end and the second voltage input end;
the second electrode covers the second substrate in a whole surface manner and is provided with a fourth voltage input end and a fifth voltage input end, and the fourth voltage input end and the fifth voltage input end are respectively positioned at two opposite side edges of the second electrode; and
and the display medium layer is arranged between the first electrode and the second electrode.
2. The display of claim 1, wherein the first voltage input, the second voltage input, the third voltage input, the fourth voltage input, and the fifth voltage input are for inputting a first voltage, a second voltage, a third voltage, a fourth voltage, and a fifth voltage, respectively, the third voltage being greater than or less than the first voltage and the second voltage, and the fourth voltage being different from the fifth voltage.
3. The display of claim 1, further comprising:
the third electrode is arranged on one side of the first electrode, which is away from the second electrode, and is provided with a first end part and a first extension part, wherein the first end part is the third voltage input end, and the first extension part extends from the first end part to one side edge of the first substrate; and
and a first insulating layer disposed between the first extension and the first electrode.
4. The display of claim 3, wherein the third electrode and the first insulating layer are located between the first substrate and the first electrode, the first insulating layer covers the third electrode, and the first end portion penetrates the first insulating layer to electrically contact the first electrode.
5. The display of claim 3, wherein the third electrode and the first insulating layer are located on a side of the first substrate facing away from the first electrode, the first insulating layer is located between the first substrate and the first extension, and the first end of the third electrode is electrically coupled to the first electrode.
6. The display of claim 3, wherein the first electrode, the third electrode, and the first insulating layer are located on a side of the first substrate facing away from the display medium layer, and the first end of the third electrode is in electrical contact with the first electrode.
7. A display according to claim 3, further comprising:
a fourth electrode disposed on a side of the second electrode facing away from the first electrode, the fourth electrode having a second end portion and a second extension portion, the second extension portion extending from the second end portion to a side edge of the second substrate; and
a second insulating layer disposed between the second extension and the second electrode,
the second electrode is further provided with a sixth voltage input end located between the fourth voltage input end and the fifth voltage input end, and the second end of the fourth electrode is the sixth voltage input end.
8. The display of claim 7, wherein the first voltage input, the second voltage input, the third voltage input, the fourth voltage input, the fifth voltage input, and the sixth voltage input are for inputting a first voltage, a second voltage, a third voltage, a fourth voltage, a fifth voltage, and a sixth voltage, respectively, the third voltage being greater than or less than the first voltage and the second voltage, and the sixth voltage being greater than or less than the fourth voltage and the fifth voltage.
9. The display of claim 1, further comprising:
the first flexible circuit board and the second flexible circuit board, wherein the second electrode is further provided with a sixth voltage input end positioned between the fourth voltage input end and the fifth voltage input end, the first substrate, the first electrode and the display medium layer are provided with an opening, the opening exposes the sixth voltage input end of the second electrode, the first flexible circuit board is electrically connected to the third voltage input end, and the second flexible circuit board is electrically connected with the sixth voltage input end through the opening.
10. The display of claim 9, wherein the opening further exposes the third voltage input terminal of the first electrode, and the first flexible circuit board is electrically connected to the third voltage input terminal through the opening.
11. The display of claim 9, wherein the first electrode is disposed on a side of the first substrate facing away from the display medium layer.
12. The display of claim 1, wherein the first substrate, the display medium layer, and the first electrode have openings, the display further comprising a light guiding structure, a light source, and a patterned ink layer disposed on the second substrate and overlapping the openings, the light guiding structure extending into the openings and adapted to guide light from the light source through the patterned ink layer.
13. The display of claim 1, wherein the material of the display medium layer comprises a bistable medium.
CN202210529416.7A 2022-05-16 2022-05-16 Display device Pending CN117111367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210529416.7A CN117111367A (en) 2022-05-16 2022-05-16 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210529416.7A CN117111367A (en) 2022-05-16 2022-05-16 Display device

Publications (1)

Publication Number Publication Date
CN117111367A true CN117111367A (en) 2023-11-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210529416.7A Pending CN117111367A (en) 2022-05-16 2022-05-16 Display device

Country Status (1)

Country Link
CN (1) CN117111367A (en)

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