Low-power-consumption electronic ink screen display and manufacturing method

Abstract

The invention belongs to the technical field of displayers, and relates to a low-power-consumption electronic ink screen displayer and a manufacturing method. The display comprises an upper base layer, an electrophoretic display layer, a first adhesive layer and a back plate substrate which are arranged in sequence, the upper base layer comprises a second functional layer, a second adhesive layer, a base material, a common electrode and a first functional layer which are arranged in sequence; a barrier layer is arranged between the first adhesive layer and the electrophoretic display layer; the backboard substrate comprises a pixel electrode and an array substrate which are arranged in sequence. The blocking layer of the array type hollow annular structure is adopted, the single unit size of the blocking layer covers the pixel unit of the pixel electrode on the backboard substrate, the impedance problem of a bonding layer can be effectively solved, the maximum power consumption of a special picture of a product can be reduced, the service life of a battery of the product can be prolonged, and the endurance time can be prolonged; and the yield is improved, and the cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of displays, and in particular, relates to a low-power electronic ink screen display and a manufacturing method thereof. Background Art

[0002] Electrophoretic display is a process in which charged color particles are encapsulated between parallel conductive plates. By changing the polarity of the conductive plates, the charged color particles move to a state of equilibrium, thereby achieving switching between different colors.

[0003] Electronic ink display is a display screen that uses a dot matrix array substrate and relies on electrophoretic display to drive the display screen to the specified screen. Electrophoretic display has a bistable characteristic. It only needs to apply an electric field during the screen switching process to complete the screen switching. After the screen switching is completed, the power supply can be cut off. The screen can be maintained for more than 24 hours. Therefore, the power consumption is significantly superior to the current LED, LCD and OLED displays. It is widely used in current supermarket price signs, billboards and educational tablets.

[0004] The current structure of the electronic ink screen is roughly divided into two mainstream directions: the capsule solution and the micro-cup solution. At present, both solutions have encountered the problem of high current in the striped screen and the 1*1 checkerboard screen during the driving process. The main reason for the current exceeding the load is the impedance problem of the adhesive layer. Because it is necessary to consider the movement of the color-developing particles inside the capsule, completely insulating viscose materials cannot be selected, and only 106~1012 ohm materials can be selected. Therefore, when driving these two special screens, the current will exceed the normal screen by 30~40 times. Existing electronic ink screens all achieve current adjustment by adjusting the thickness of the viscose layer material, and the process yield is low. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a low-power electronic ink screen display.

[0006] In a first aspect, the present invention provides a low-power electronic ink screen display, comprising an upper base layer, an electrophoretic display layer, a first adhesive layer and a backplane substrate arranged in sequence; The upper base layer comprises a second functional layer, a second adhesive layer, a substrate, a common electrode and a first functional layer arranged in sequence; A barrier layer is provided between the first adhesive layer and the electrophoretic display layer; The backplane substrate includes a pixel electrode and an array substrate arranged in sequence; The common electrode is arranged on the upper side of the substrate; the first functional layer is arranged on the common electrode; the second adhesive layer is arranged on the lower side of the substrate; the second functional layer is arranged on the second adhesive layer; The electrophoretic display layer is arranged below the first functional layer; the barrier layer is patterned by using an exposure and development process, and a first adhesive layer is formed on the barrier layer; the barrier layer is an array-type hollow ring structure, and a single unit of the barrier layer is large enough to cover a pixel unit of a pixel electrode on a backplane substrate; The pixel electrode is arranged on the array substrate; the first adhesive layer covers the pixel electrode and is bonded to the array substrate of the backplane substrate.

[0007] In a second aspect, the present invention provides a method for manufacturing a low-power electronic ink screen display, comprising: A common electrode is formed on the first surface of the substrate; after completion, a material with increased adhesion and flatness is selected to form a first functional layer on the common electrode; a second adhesive layer is formed on the lower side of the substrate; a second functional layer is formed on the second adhesive layer, and the upper base layer is formed; The first functional layer of the upper base layer is coated with an electrophoretic display layer, and the first adhesive layer is formed after the electrophoretic display layer is coated; a barrier layer is formed, and the barrier layer is patterned by using an exposure and development process; and the first adhesive layer is formed on the barrier layer; The first adhesive layer is bonded to the back panel substrate. The barrier layer is an array-type hollow ring structure. The size of a single unit of the barrier layer covers the pixel unit of the pixel electrode on the back panel substrate.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the electrophoretic display layer is a capsule layer or a microcup layer.

[0010] Further, the common electrode is sputtered and disposed on the upper side of the substrate.

[0011] Furthermore, the material of the second adhesive layer is transparent optical adhesive, and the process of disposing the second adhesive layer on the lower side of the substrate is slit coating.

[0012] Furthermore, the second functional layer is a front light guide plate; the second functional layer is laminated on the second adhesive layer.

[0013] Furthermore, the first adhesive layer is disposed on the barrier layer by drip irrigation.

[0014] The beneficial effects of the present invention are as follows: the present invention adopts an array-type hollow ring-shaped barrier layer, and a single unit size of the barrier layer covers the pixel unit of the pixel electrode on the back panel substrate, which can effectively overcome the impedance problem of the adhesive layer, reduce the maximum power consumption of the product's special screen, extend the service life of the product battery, increase the endurance time; improve the yield rate and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic diagram of the structure of a low-power electronic ink screen display provided by Embodiment 1 of the present invention; Figure 2 A schematic diagram of a layered structure of a low-power electronic ink screen display; Figure 3 A flowchart of a method for manufacturing a low-power electronic ink screen display provided in Example 2 of the present invention.

[0016] Icon: 1-upper base layer; 101-second functional layer; 102-second adhesive layer; 103-substrate; 104-common electrode; 105-first functional layer; 2-electrophoretic display layer; 3-first adhesive layer; 4-backplane substrate; 401-pixel electrode; 402-array substrate; 5-barrier layer. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Example 1 As an example, Figure 1 As shown, in order to solve the above technical problems, this embodiment provides a low-power electronic ink screen display, including an upper base layer 1, an electrophoretic display layer 2, a first adhesive layer 3 and a backplane substrate 4 arranged in sequence; The upper substrate 1 includes a second functional layer 101, a second adhesive layer 102, a substrate 103, a common electrode 104 and a first functional layer 105 arranged in sequence; A barrier layer 5 is provided between the first adhesive layer 3 and the electrophoretic display layer 2; The backplane substrate 4 includes a pixel electrode 401 and an array substrate 402 arranged in sequence; The common electrode 104 is disposed on the upper side of the substrate 103; the first functional layer 105 is disposed on the common electrode 104; the second adhesive layer 102 is disposed on the lower side of the substrate 103; and the second functional layer 101 is disposed on the second adhesive layer 102; The electrophoretic display layer 2 is disposed below the first functional layer 105; the barrier layer 5 is patterned using an exposure and development process, and a first adhesive layer 3 is formed on the barrier layer 5; the barrier layer 5 is an array-type hollow ring structure, and a single unit size of the barrier layer 5 covers a pixel unit of a pixel electrode 401 on the backplane substrate 4; The pixel electrode 401 is disposed on the array substrate 402 ; the first adhesive layer 3 covers the pixel electrode 401 and is bonded to the array substrate 402 of the backplane substrate 4 .

[0019] As attached Figure 2 As shown, the upper base layer 11, the electrophoretic display layer 22, the first adhesive layer 33, the barrier layer 55, the pixel electrode 401 and the array substrate 402 are arranged in sequence from top to bottom.

[0020] Optionally, the electrophoretic display layer 2 is a capsule layer or a microcup layer. The capsule layer includes a white particle layer, a capsule wall and a black particle layer which are arranged in sequence.

[0021] Optionally, the common electrode 104 is disposed on the upper side of the substrate 103 by sputtering.

[0022] Optionally, the material of the second adhesive layer 102 is transparent optical adhesive, and the process of disposing the second adhesive layer 102 on the lower side of the substrate 103 is slit coating.

[0023] Optionally, the second functional layer 101 is a front light guide plate; the second functional layer 101 is laminated on the second adhesive layer 102 .

[0024] Optionally, the first adhesive layer 3 is disposed on the barrier layer 5 by drip irrigation.

[0025] The present invention adopts an array-type hollow ring-shaped barrier layer 5, and a single unit size of the barrier layer 5 covers the pixel unit of the pixel electrode 401 on the back panel substrate 4, which can effectively overcome the impedance problem of the adhesive layer and reduce the maximum power consumption of the product's special screen. Experiments have shown that the product power consumption is reduced from 300mA to 100mA, which can extend the service life of the product battery and increase the endurance time; improve the yield rate and reduce the cost.

[0026] Example 2 Based on Example 1 as shown in the attached Figure 1 A low power consumption electronic ink screen display as shown in the attached Figure 3 As shown, an embodiment of the present invention further provides a method for manufacturing a low-power electronic ink screen display, comprising: A common electrode 104 is fabricated on the first surface of the substrate 103; after completion, a material with increased adhesion and flatness is selected to fabricate a first functional layer 105 on the common electrode 104; a second adhesive layer 102 is fabricated on the lower side of the substrate 103; a second functional layer 101 is fabricated on the second adhesive layer 102, and the fabrication of the upper base layer 1 is completed; The first functional layer 105 of the upper base layer 1 is coated to form an electrophoretic display layer 2, and after coating the electrophoretic display layer 2, a first adhesive layer 3 is formed; a barrier layer 5 is formed, and the barrier layer 5 is patterned by using an exposure and development process; and the first adhesive layer 3 is formed on the barrier layer 5; The first adhesive layer 3 is bonded to the back panel substrate 4 . The barrier layer 5 is an array-type hollow ring structure. The size of a single unit of the barrier layer 5 covers the pixel unit of the pixel electrode 401 on the back panel substrate 4 .

[0027] Optionally, the electrophoretic display layer 2 is a capsule layer or a microcup layer. The capsule layer includes a white particle layer, a capsule wall and a black particle layer which are arranged in sequence.

[0028] Optionally, the common electrode 104 is disposed on the upper side of the substrate 103 by sputtering.

[0029] When manufacturing the upper base layer 1, the common electrode 104 is manufactured on the substrate 103. The electrode material is selected by the sputtering process. The material includes but is not limited to nano-metal wires and organic transparent conductive materials, which can provide good conductive properties and have the advantages of transparency. In addition, the process can also be selected to use coating, evaporation and roller coating.

[0030] After the common electrode 104 is manufactured, the first functional layer 105 is manufactured. The first functional layer 105 is made of a material that can increase adhesion and flatness.

[0031] Optionally, the material of the second adhesive layer 102 is transparent optical adhesive, and the process of disposing the second adhesive layer 102 on the lower side of the substrate 103 is slit coating.

[0032] After the first functional layer 105 is made, the first adhesive layer is made on the other side of the substrate 103. The material of the first adhesive layer is transparent optical adhesive, and the process is preferably slit coating, including but not limited to roller coating, screen printing and lamination.

[0033] Optionally, the second functional layer 101 is a front light guide plate; the second functional layer 101 is laminated on the second adhesive layer 102 .

[0034] The second functional layer 101 is manufactured on the first adhesive layer. The second functional layer 101 is preferably a front light guide plate, and the preferred process is lamination.

[0035] Capsules are made on the upper base layer 1, and the process includes but is not limited to slit coating and silk screen printing, and the coating method is not limited to roller coating.

[0036] After coating the electrophoretic display layer 2, the first adhesive layer 3 is produced. The production of the first adhesive layer 3 is divided into two steps: the first step: producing the barrier layer 5, using an insulating patternable material such as an ester photosensitive material, the process includes but is not limited to slit coating, roller coating, silk screen printing and evaporation, etc., and the barrier layer 5 is patterned using a mask; the second step: producing the first adhesive layer 3, using an adhesive material, and the process includes but is not limited to drip irrigation, coating and silk screen printing.

[0037] Optionally, the first adhesive layer 3 is disposed on the barrier layer 5 by drip irrigation.

[0038] Optionally, the barrier layer 5 is an array-type hollow annular structure.

[0039] Optionally, a single unit size of the barrier layer 5 covers a pixel unit of the pixel electrode 401 on the backplane substrate 4 .

[0040] Specifically, the thickness of a single unit of the barrier layer 5 is adjusted according to the width of the insulating channel between the pixel electrodes 401 to ensure the insulating effect.

[0041] The present invention adopts an array-type hollow ring-shaped barrier layer, and a single unit size of the barrier layer covers the pixel unit of the pixel electrode on the back panel substrate, which can effectively overcome the impedance problem of the adhesive layer and reduce the maximum power consumption of the product's special screen. Experiments have shown that the product power consumption is reduced from 300mA to 100mA, which can extend the service life of the product battery and increase the endurance time; improve the yield rate and reduce the cost.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-power electronic ink screen display, characterized in that: It comprises an upper base layer (1), an electrophoretic display layer (2), a first adhesive layer (3) and a backplane substrate (4) which are arranged in sequence; The upper substrate (1) comprises a second functional layer (101), a second adhesive layer (102), a substrate (103), a common electrode (104) and a first functional layer (105) which are arranged in sequence; A barrier layer (5) is provided between the first adhesive layer (3) and the electrophoretic display layer (2); The backplane substrate (4) comprises a pixel electrode (401) and an array substrate (402) which are arranged in sequence; The common electrode (104) is arranged on the upper side of the substrate (103); the first functional layer (105) is arranged on the common electrode (104); the second adhesive layer (102) is arranged on the lower side of the substrate (103); and the second functional layer (101) is arranged on the second adhesive layer (102); The electrophoretic display layer (2) is arranged below the first functional layer (105); the barrier layer (5) is patterned using an exposure and development process, and a first adhesive layer (3) is produced on the barrier layer (5); the barrier layer (5) is an array-type hollow annular structure, and a single unit of the barrier layer (5) is large enough to cover a pixel unit of a pixel electrode (401) on a backplane substrate (4); The pixel electrode (401) is arranged on the array substrate (402); the first adhesive layer (3) covers the pixel electrode (401) and is bonded to the array substrate (402) of the backplane substrate (4).

2. A low-power electronic ink screen display according to claim 1, characterized in that: The electrophoretic display layer (2) is a capsule layer or a microcup layer.

3. A method for manufacturing a low-power electronic ink screen display, characterized in that: include: A common electrode (104) is fabricated on the first surface of a substrate (103); after fabrication, a material having increased adhesion and flatness is selected to fabricate a first functional layer (105) on the common electrode (104); a second adhesive layer (102) is fabricated on the lower side of the substrate (103); a second functional layer (101) is fabricated on the second adhesive layer (102), thereby completing fabrication of an upper base layer (1); The first functional layer (105) of the upper base layer (1) is coated to form an electrophoretic display layer (2), and after the electrophoretic display layer (2) is coated, a first adhesive layer (3) is formed; a barrier layer (5) is formed, and the barrier layer (5) is patterned using an exposure and development process; and the first adhesive layer (3) is formed on the barrier layer (5); The first adhesive layer (3) is bonded to the back panel substrate (4); the barrier layer (5) is an array-type hollow ring structure; a single unit of the barrier layer (5) is large enough to cover a pixel unit of a pixel electrode on the back panel substrate (4).

4. A method for manufacturing a low-power electronic ink screen display according to claim 3, characterized in that: The common electrode (104) is sputtered and arranged on the upper side of the substrate (103).

5. The method for manufacturing a low-power electronic ink screen display according to claim 3, characterized in that: The material of the second adhesive layer (102) is transparent optical adhesive, and the process of arranging the second adhesive layer (102) on the lower side of the substrate (103) is slit coating.

6. A method for manufacturing a low-power electronic ink screen display according to claim 3, characterized in that: The second functional layer (101) is a front light guide plate; the second functional layer (101) is laminated and arranged on the second adhesive layer (102).

7. A method for manufacturing a low-power electronic ink screen display according to claim 3, characterized in that: The first adhesive layer (3) is disposed on the barrier layer (5) by drip irrigation.

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