TWI637301B - Display device - Google Patents

Abstract

A display includes a first conductive layer, a plurality of display units, a plurality of first traces, a plurality of second traces, a second conductive layer, and a DC power supply. The display unit is disposed above the first conductive layer, and the first trace and the second trace are disposed above the display unit. The first trace extends in the first direction, and the second trace extends in the second direction. The direction is different from the second direction. The second conductive layer is disposed above the display unit and is electrically insulated from the first and second traces. The second conductive layer has a plurality of conductive blocks, and there is a first conductive layer between any two adjacent ones of the conductive blocks. One of the first and second tracks. The DC power supply is electrically connected to the first trace and the second trace.

Description

monitor

The invention relates to a display.

With the development of electronic product design, many highly functional electronic products are gradually being developed. In terms of products that provide users with display screens, because of the many advantages of electronic paper, its development is also very promising.

Specifically, the screen provided by the electronic paper can have a visual appearance such as printing on paper or writing on paper, and its power consumption requirement is small. In addition, electronic paper can be like ordinary paper. It is illuminated by ambient light, so it can provide users with a more comfortable experience when reading, and the displayed image is still clearly visible in direct sunlight. Therefore, there are more and more related applications of electronic paper, such as digital signage, electronic whiteboard, electronic signboard or e-book.

An embodiment of the present invention provides a display including a display unit, a trace, and a conductive block, wherein the trace can be connected to a DC power supply and has a positive potential or a negative potential, and the conductive block is a floating potential. When the user scratches the structural surface of the display through the operating medium, the operating medium can be in contact with the wiring and the conductive block at the same time, so that the conductive block is in a charged state, so that the conductive block can be The display medium of the display unit is provided with an electric field. When a colored display medium is attracted to the structural surface of the display due to an electric field, the display can present a corresponding color and thereby display the writing track of the operating medium.

An embodiment of the present invention provides a display including a first conductive layer, a plurality of display units, a plurality of first traces, a plurality of second traces, a second conductive layer, and a DC power supply. A plurality of display units are disposed above the first conductive layer. A plurality of first traces are disposed above the display unit, wherein each first trace extends along a first direction. A plurality of second traces are disposed above the display unit, wherein each second trace extends along a second direction, and the first direction is different from the second direction. The second conductive layer is disposed above the display unit and is electrically insulated from the first and second traces, and the vertical projection of the second conductive layer on the first conductive layer and the vertical projection of the display unit on the first conductive layer are at least Partial overlap, where the second conductive layer has a plurality of conductive blocks, and there is one of the first and second traces between any two adjacent ones of the conductive blocks. The DC power supply is electrically connected to the first trace and the second trace.

In some embodiments, each display unit has at least a first display medium and at least a second display medium therein, the first display medium and the second display medium have different colors, and the first display medium and the second display medium The display medium has opposite electrical properties.

In some embodiments, the display further includes a first insulating layer. The first insulating layer is disposed on the second conductive layer and has a plurality of openings, wherein in the vertical projection direction of the first conductive layer, each opening overlaps the first trace and the second trace, and overlaps with each first trace. The conductive blocks adjacent to the line or each second trace partially overlap.

In some embodiments, the first and second traces are electrically connected to each other. Sexual connection.

In some embodiments, the first trace and the second trace are electrically insulated from each other.

In some embodiments, each first trace includes a plurality of conductive line segments, and the display further includes at least one jumper electrode and a second insulation layer. The jumper electrode is used to electrically connect two of the conductive line segments, and the jumper electrode crosses one of the second traces. The second insulating layer is disposed between the jumper electrode and the second trace.

In some embodiments, the second conductive layer has a floating potential.

In some embodiments, the first conductive layer has a plurality of pixel electrodes, and the display further includes a plurality of switching elements, and the switching elements are electrically connected to the pixel electrodes, respectively.

In some embodiments, the display further includes a plurality of photoelectric elements for generating a photocurrent after being illuminated, wherein the photoelectric elements are respectively electrically connected to the conductive block, and each photoelectric element is connected to the One of them is electrically connected.

In some embodiments, from the perspective of the vertical second conductive layer, the line width of each first trace and each second trace is L, each conductive block is a rectangle of A * B, and A ≧ B. The minimum vertical distance between each conductive block and the adjacent first and second traces is X.

In some embodiments, the display further includes an input device. The input device has a connected body and a conductive end surface, wherein the outer diameter of the conductive end surface is R, and [B + 2X + L] ≧ R ≧ [L + X].

100A, 100B, 100C, 100D, 100E, 100F‧‧‧ Display

102‧‧‧first conductive layer

103‧‧‧pixel electrode

104‧‧‧Second conductive layer

106‧‧‧Conductive block

110‧‧‧display unit

111‧‧‧shell

112‧‧‧First display medium

114‧‧‧Second display medium

120‧‧‧ the first route

121A, 121B‧‧‧ Conductive line segment

122‧‧‧Second Route

124‧‧‧Grid

126‧‧‧DC Power Supply

126A‧‧‧First DC power supply

126B‧‧‧Second DC Power Supply

130‧‧‧Second insulation layer

132, 134‧‧‧ opening

140‧‧‧third insulating layer

142‧‧‧ Jumper electrode

150‧‧‧Array substrate

152‧‧‧switching element

1B-1B ’, 1C-1C’‧‧‧ line segments

3B‧‧‧Area

A‧‧‧ length

A1‧‧‧First direction

A2‧‧‧Second direction

B‧‧‧Width

D‧‧‧ Drain

D1, D2, D3, X‧‧‧ distance

G‧‧‧Gate

L‧‧‧line width

R‧‧‧ outer diameter

S‧‧‧Source

SC‧‧‧Semiconductor layer

160‧‧‧Fourth insulation layer

162‧‧‧Conductive Filler

164‧‧‧Photoelectric element

166‧‧‧Fifth insulation layer

200‧‧‧Conductive brush

202‧‧‧ cylindrical body

204‧‧‧Conductive end face

FIG. 1A is a schematic top view of a display according to a first embodiment of the present disclosure.

Fig. 1B is a schematic cross-sectional view taken along line 1B-1B 'of Fig. 1A.

Figure 1C is a schematic cross-sectional view taken along line 1C-1C 'of Figure 1A.

FIG. 1D is a schematic cross-sectional view of operating a conductive brush.

2A and 2B are schematic cross-sectional views of a display according to a second embodiment of the present disclosure.

FIG. 3A is a schematic top view of a display according to a third embodiment of the present disclosure.

FIG. 3B is an enlarged schematic view of a region 3B in FIG. 3A.

FIG. 4 is a schematic cross-sectional view of a display according to a fourth embodiment of the present disclosure.

FIG. 5 is a schematic cross-sectional view of a display according to a fifth embodiment of the present disclosure.

FIG. 6 is a schematic top view of a display according to a sixth embodiment of the present disclosure.

In the following, a plurality of embodiments of the present invention will be disclosed graphically. For the sake of clarity, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, to simplify the drawings, some conventional structures and components are The diagram will be shown in a simple and schematic way.

In this article, the terms first, second, third, etc. are used to describe various elements, components, regions, and layers that can be understood. However, these elements, components, regions, and layers should not be limited by these terms. These words are limited to identifying single elements, components, areas, or layers. Therefore, a first element, component, region, or layer in the following can also be referred to as a second element, component, region, or layer without departing from the intention of the present invention.

Please refer to FIG. 1A, FIG. 1B, and FIG. 1C, where FIG. 1A is a schematic top view of the display 100A according to the first embodiment of the present disclosure, and FIG. 1B illustrates a line segment 1B along FIG. 1A- 1B ′ is a schematic cross-sectional view, and FIG. 1C is a schematic cross-sectional view taken along line 1C-1C ′ of FIG. 1A. The display 100A of the present disclosure can be used as an electronic whiteboard, which can be used to display an operator's touch track, for example. The display 100A includes a first conductive layer 102, a second conductive layer 104, a first insulating layer 108, a plurality of display units 110, a plurality of first traces 120, a plurality of second traces 122, and a DC power supply 126. The display surface of the display 100A is on the side where the second conductive layer 104 is located, that is, the user or the operator is positioned on the side where the second conductive layer 104 is located for viewing and operation.

The first conductive layer 102 may be an electrode film, and the material of the electrode film may be a transparent metal oxide, such as, for example, Indium-Gallium-Zinc Oxide (IGZO), Indium-Tin Oxide; ITO), Indium-Zinc Oxide (IZO), or a combination thereof. The first insulating layer 108 and the display unit 110 are disposed above the first conductive layer 102. The first insulating layer 108 may be a combination of a substrate and an insulating material, such as forming silicon oxide (SiOx) and silicon nitride on the substrate. (SiNx), silicon oxynitride (SiOxNy), or other materials that can be used as insulation features, or the first insulation layer 108 can also be a substrate with electrical insulation properties. The display unit 110 is located between the first conductive layer 102 and the first insulating layer 108. The display unit 110 may be, for example, an electrophoretic display mode. For example, the display unit 110 may have a casing 111, a plurality of first display media 112, and a plurality of second display media 114, wherein the plurality of first display media 112 and the plurality of second display media 114 are located in the casing 111 . The casing 111 may be filled with a transparent liquid (not labeled), so that the first display medium 112 and the second display medium 114 may be suspended in the casing 111. In addition, although the casings 111 depicted in FIG. 1A, FIG. 1B, and FIG. 1C are casings of the same size, in other embodiments, different casings may have different sizes, that is, the display unit 110 may With multiple housings of different sizes.

The colors of the first display medium 112 and the second display medium 114 may be different, and the first display medium 112 and the second display medium 114 have opposite electrical properties. For example, the first display medium 112 may be positively charged white particles. The second display medium 114 may be a negatively charged black particle. As shown in FIG. 1B and FIG. 1C, when a voltage is applied to the first conductive layer 102 so that the display unit 110 is located in a positive electric field, the first display medium 112 (positive-charged white particles) will gather in the shell. The top of the body 111, and the second display medium 114 (negatively charged black particles) will be gathered at the bottom of the casing 111, so that the user can see a white image on the surface of the display unit 110, that is, in the first 1B Under the conditions shown in FIG. 1C and FIG. 1C, the area of the display 100A in FIGS. 1B and 1C is a white screen.

In addition, the display unit 110 of the disclosure is not limited to the electrophoretic display mode of two-color particles. In other embodiments, the display unit 110 may For example, the display unit 110 may be a combination of a black liquid and white particles, or the display unit 110 may be an electrowetting display mode or other display units with a bistable mode.

The first trace 120 and the second trace 122 are disposed above the first insulating layer 108 and the display unit 110. The first trace 120 extends in a first direction D1, and the second trace 122 extends in a second direction D2. The first direction D1 is different from the second direction D2. For example, the first direction D1 and the second direction D2 may be substantially orthogonal. In this configuration, the plurality of first traces 120 and the plurality of second traces 122 may define a plurality of grids 124.

The second conductive layer 104 is disposed above the first insulating layer 108 and the display unit 110, and is electrically insulated from the first and second traces 120 and 122. The vertical projection of the second conductive layer 104 on the first conductive layer 102 and the vertical projection of the display unit 110 on the first conductive layer 102 at least partially overlap. Specifically, the second conductive layer 104 has a plurality of conductive blocks 106, and the conductive blocks 106 are respectively located above the display unit 110. That is, if the display 100A is viewed from above, the position of the conductive block 106 will overlap the position of the display unit 110. In addition, the conductive blocks 106 of the second conductive layer 104 have a floating potential.

Each conductive block 106 is respectively located in the grid 124, so that there is one of the first trace 120 and the second trace 122 between any adjacent two of the conductive blocks 106. For example, referring to FIG. 1A and FIG. 1B, there may be a first trace 120 between two consecutively arranged conductive blocks 106, or referring to FIG. 1A and FIG. 1C, two consecutive lateral There may be a second trace 122 between the arranged conductive blocks 106. In addition, the positions of the conductive blocks 106, the first traces 120, and the second traces 122 may be substantially coplanar. Please refer to Figure 1B And FIG. 1C, the conductive block 106, the first trace 120, and the second trace 122 are collectively disposed on the first insulating layer 108, and the minimum vertical distance between the first trace 120 and the first conductive layer 102 is a distance D1. The minimum vertical distance between the second trace 122 and the first conductive layer 102 is the distance D2, and the minimum vertical distance between the conductive block 106 and the first conductive layer 102 is the distance D3. The distance D1, the distance D2, and the distance D3 are substantially equal.

The DC power supply 126 is electrically connected to the first trace 120 and the second trace 122. In this embodiment, the first trace 120 and the second trace 122 can be electrically connected to each other. In this configuration, when When the DC power supply 126 outputs a voltage, the first trace 120 and the second trace 122 may have the same potential. However, not limited to this, the first trace 120 and the second trace 122 can be electrically disconnected, and the DC power supply 126 can provide signals independently.

With the above configuration, when the user writes on the display 100A through the operating medium, the display 100A displays a corresponding writing track. Please refer to FIG. 1A and FIG. 1D at the same time, wherein FIG. 1D shows a schematic cross-sectional view of the operating medium as the conductive brush 200, and the cross-sectional position of FIG. 1D is the same as that of FIG. 1B. When viewed from the perspective of the vertical second conductive layer 104, the first trace 120 has a line width L, and the conductive block 106 may be a rectangle with a length A * width B, and A ≧ B. In addition, each conductive block 106 The minimum vertical distance from the adjacent first trace 120 is the distance X. In addition, although the above description uses the first trace 120 as an example, the size of the second trace 122 (see FIG. 1C) and its relationship with the conductive block 106 may be the same as the first trace 120. For example, the second trace 122 may also have a line width L, and the minimum vertical distance between each conductive block 106 and the adjacent second trace 122 may also be a distance X. In addition, in other embodiments, the conductive block 106 of the second conductive layer 104 may be circular or oval. Shape or other polygon. For example, in another embodiment, the conductive block of the second conductive layer may be designed as a circle, and the diameter of the circular conductive block may be equal to the length A or the width B. In still another embodiment, the conductive block of the second conductive layer may be designed as an ellipse, and the long axis and the short axis of the elliptical conductive block may be equal to the length A and the width B, respectively.

Please refer to Figure 1D again. The input device as the operating medium may be, for example, a conductive brush 200 having a cylindrical body 202 and a conductive end surface 204 connected to each other. The conductive end surface 204 has an outer diameter R, where the outer diameter R is an outer diameter when the conductive end surface 204 is viewed in a front view direction, and [B + 2X + L] ≧ R ≧ [L + X]. Through this configuration, when the conductive brush 200 is drawn across the surface of the structure in a direction of the arrow and contacts the first trace 120 (or the second trace 122) and the conductive block 106, the size of the cylindrical body 202 may be sufficient to make the conductive The end surface 204 is in contact with the first trace 120 and the conductive block 106 at the same time, so that the conductive block 106 is charged through the first trace 120, that is, the conductive block 106 may have the same potential as the first trace 120, wherein the magnitude of this potential is It may be equivalent to a voltage provided by the DC power supply 126.

For example, when the DC power supply 126 provides a positive voltage so that the first trace 120 and the second trace 122 electrically connected to the DC power supply 126 have a positive potential, the first trace 120 and the second trace 122 are in contact with the first trace 120 and the conductive block 106 at the same time. The conductive brush 200 will charge the conductive block 106 so that the conductive block 106 also has a positive potential. Next, the conductive block 106 with a positive potential causes the second display medium 114 (negatively charged black particles) of the display unit 110 to be attracted to the top of the housing 111 due to the opposite electrical properties, and also causes the display unit to The first display medium 112 (positively charged white particles) of 110 repels it to the bottom end of the casing 111 because of the same electrical properties.

At this time, the structure surface of the display 100A can display the movement track of the conductive brush 200 through the color of the second display medium 114. That is, the writing trajectory of the user operating the conductive brush 200 can be displayed, so as to realize the function of the display 100A as an electronic whiteboard. In addition, since the structure of the display 100A is to implement the function of the electronic whiteboard through the DC power supply 126, the configuration of the electronic whiteboard is simplified, that is, the electronic whiteboard can provide display writing when an external battery is used. Trajectory function.

In addition, although there are two kinds of display media of the display unit of this embodiment, in other embodiments, there may be three kinds of display media of the display unit, and their electrical properties are different from each other. For example, the display unit may have positively charged white particles, negatively charged red particles, and negatively charged black particles, where the potentials of the red particles and the black particles are different. With this configuration, the display can display more than two colors. Writing tracks.

Please refer to FIG. 2A and FIG. 2B again. FIG. 2A and FIG. 2B are schematic cross-sectional views of the display 100B according to the second embodiment of the present disclosure. The cross-sectional position of FIG. 2A and the cross-sectional position of FIG. The cross-sectional position in FIG. 2B is the same as the cross-sectional position in FIG. 1C. At least one difference between this embodiment and the first embodiment is that the display 100B of this embodiment further includes a second insulating layer 130, and the second insulating layer 130 is disposed on the conductive block 106 of the second conductive layer 104. The second insulating layer 130 can be used as a protective layer of the conductive block 106, so as to prevent the conductive block 106 from being oxidized or falling off. On the other hand, the second insulating layer 130 can also prevent the user from being damaged by static electricity caused by accidentally touching the conductive block 106.

In addition, the second insulating layer 130 has openings 132 and 134. Yudi In a vertical projection direction of a conductive layer 102, the opening 132 overlaps the first trace 120, and the opening 132 also partially overlaps the conductive block 106 adjacent to each first trace 120. Similarly, in the vertical projection direction of the first conductive layer 102, the opening 134 overlaps the second trace 122, and the opening 134 also partially overlaps the conductive block 106 adjacent to each second trace 122. That is, through the openings 132 and 134, the first trace 120, the second trace 122, and a part of the conductive block 106 may be exposed. The first trace 120, the second trace 122, and the conductive block 106 exposed through the openings 132 and 134 can charge the conductive block 106 through a conductive brush in the manner described above to display the user's writing track.

Please refer to FIG. 3A again, where FIG. 3A is a schematic top view of a display 100C according to a third embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that the first traces 120 and the second traces 122 of the display 100C of this embodiment are electrically insulated from each other.

As shown in FIG. 3A, the first traces 120 are connected to each other at the left and right sides of the structure of the display 100C through connection wires to form an electrical connection, and the second traces 122 are mutually connected to each other on the display 100C. The upper and lower sides of the structure are also connected by connecting wires to form an electrical connection. The combination of multiple first traces 120 and the combination of multiple second traces 122 are at the four corners of the structure of the display 100C. To be separated from each other by being disconnected. The combination formed by the plurality of first traces 120 can be connected to the first DC power supply 126A, and the combination formed by the plurality of second traces 122 can be connected to the second DC power supply 126B. The voltage value provided by the current power supply 126A and the voltage value provided by the second DC power supply 126B may be the same or different.

Please refer to Figure 3B again, where Figure 3B shows the area of Figure 3A Enlarged schematic of domain 3B. The first trace 120 includes disconnected conductive segments 121A and 121B, and the conductive traces 121A and 121B of the first trace 120 are not in contact with the second trace 122. In addition, in this embodiment, the display 100C includes a third insulating layer 140 and a jumper electrode 142. The third insulating layer 140 covers a part of the second trace 122 and is located between the conductive line segments 121A and 121B, so as to be an insulation feature between the conductive line segments 121A and 121B. The jumper electrode 142 is connected between the conductive line segments 121A and 121B, and is used to electrically connect the conductive line segments 121A and 121B to each other. In addition, the jumper electrode 142 is disposed on the third insulation layer 140 and crosses the second trace 122. The third insulation layer 140 also serves as an insulation feature between the second trace 122 and the jumper electrode 142.

Through the above configuration, the first trace 120, the second trace 122, and the conductive block 106 can still be charged by the conductive brush 200 by the conductive brush 200 as described above, so that the structure of the display 100C can realize the electronic whiteboard. Functions.

In addition, since the first trace 120 and the second trace 122 are electrically insulated from each other, an appropriate signal (such as an inductive signal or a capacitive signal) can also be provided to the first trace 120 and the second trace. 122 is used to provide the touch function of the display 100C. That is, one of the first and second traces 120 and 122 can be used as a transmitting electrode (Tx), and the other one of them can be used as a receiving electrode (Rx). In addition to the writing track of a display input device (such as a conductive brush), it can be used as a touch panel.

In some embodiments, the display 100C may have a controller (not shown), and the user may adjust the use state of the display 100C through the controller. For example, the display 100C can be set to the electronic whiteboard state through the controller, so that the display 100C purely displays the writing track of the input device (for example, a conductive brush). Alternatively, the display 100C can be set to the touch state through the controller, so that the display 100C provides the touch function purely by means of electrical signals. Alternatively, the display 100C may be set to display the writing track of the conductive brush and provide a touch panel function at the same time.

In addition, although the present embodiment realizes that the first trace 120 and the second trace 122 are electrically insulated from each other by providing a third insulating layer 140 and a jumper electrode 142, the disclosure is not limited thereto. In other embodiments, the first trace 120 and the second trace 122 can be electrically insulated from each other by other methods. For example, the first trace can be realized by providing a jumper electrode and an insulating layer having a through hole. The line 120 and the second trace 122 are electrically insulated from each other.

Please refer to FIG. 4 again, where FIG. 4 is a schematic cross-sectional view of a display 100D according to a fourth embodiment of the present disclosure, and the cross-sectional position of FIG. 4 is the same as that of FIG. 1B. At least one point of difference between this embodiment and the first embodiment is that the first conductive layer 102 of the display 100D of this embodiment has a plurality of pixel electrodes 103, and the display 100D of this embodiment includes an array substrate 150. The array substrate 150 includes a plurality of switching elements 152, and each switching element 152 has a gate G, a source S, a drain D, and a semiconductor layer SC. In order to facilitate the description and not to make the drawing too complicated, the dimensional ratio of the switching element 152 is not drawn according to the actual proportion. In practice, the dimensional proportional relationship between the switching element 152 and other elements may be smaller than the proportional relationship depicted in FIG. 4. The drain D of each switching element 152 can be electrically connected to the corresponding pixel electrode 103. Through the plurality of switching elements 152 of the array substrate 150, a voltage can be applied to the pixel electrodes 103 of the first conductive layer 102 to control the first display medium 112 and the second display medium 114 in the casing 111 of the display unit 110.

For example, when the array substrate 150 applies a positive voltage to a part of the pixel electrode 103 of the first conductive layer 102 and a negative voltage to another part of the pixel electrode 103 of the first conductive layer 102, the image is applied with a positive voltage. The first display medium 112 corresponding to the pixel electrode 103 is repelled to the top of the casing 111, and the second display medium 114 corresponding to the pixel electrode 103 to which a negative voltage is applied is repelled to the top of the casing 111, so that The structure surface of the display 100D can display white and black at the same time. That is, in this embodiment, when the input device (for example, a conductive brush) has not contacted the structural surface of the display 100D, the display 100D may first display an image. Then, after the conductive brush contacts the structure surface of the display 100D, the touch trace of the conductive brush can be displayed again.

Furthermore, in some embodiments, the display 100D may further include an external input device (not shown), and the external input device is electrically connected to the array substrate 150. The external input device may be used to input image information to the array substrate 150. So that the array substrate 150 can apply a voltage to the pixel electrode 103 of the first conductive layer 102, so that the display 100D displays a frame corresponding to the image information.

Please refer to FIG. 5 again, which is a schematic cross-sectional view of a display 100E according to a fifth embodiment of the present disclosure, and the cross-sectional position of FIG. 5 is the same as the cross-sectional position of FIG. 1B. At least one difference between this embodiment and the fourth embodiment is that the display 100E of this embodiment can use a photoelectric element to charge the conductive block 106 of the second conductive layer 104. Specifically, in this embodiment, the display 100E further includes a fourth insulating layer 160, a plurality of conductive fillers 162, a plurality of photovoltaic elements 164, and a fifth insulating layer 166.

The fourth insulating layer 160 is disposed on the conductive block of the second conductive layer 104 106. The first trace 120 and the second trace 122 are provided with a plurality of through holes. The positions of the plurality of through holes of the fourth insulating layer 160 are the conductive blocks 106 and the first conductive layer 104 respectively Trace 120 and second trace 122. A plurality of conductive fillers 162 are respectively located in a plurality of through holes of the fourth insulating layer 160, and are in contact with and electrically connected to the conductive blocks 106, the first traces 120, and the second traces 122 corresponding to the plurality of vias, respectively. . The fifth insulating layer 166 is disposed on the fourth insulating layer 160 and covers the photovoltaic element 164.

A plurality of photovoltaic elements 164 are disposed on the fourth insulating layer 160. Each of the photovoltaic elements 164 can be electrically connected to the conductive block 106 and the first wiring 120 adjacent to each other through the conductive filler 162. In addition, although the fifth The optoelectronic element 164 shown in the figure is electrically connected to the first trace 120 as an example. However, the optoelectronic element 164 may also be electrically connected to the conductive block 106 and the second trace 122 adjacent to each other. The photoelectric element 164 can be used to generate a photocurrent after being irradiated with light. Specifically, after receiving the corresponding wavelength, the photoelectric element 164 can generate excitons and separate into electron hole pairs to generate a photocurrent. The wavelength range corresponding to the photoelectric element 164 This is related to the material energy gap of the photovoltaic element 164.

In this configuration, the user can use a light source as an operating medium, such as a laser pen. When the light provided by the operating medium travels to the photoelectric element 164, the illuminated photoelectric element 164 generates a photocurrent to charge the corresponding conductive block 106, so that the display 100E displays the illumination track of the operating medium.

Please refer to FIG. 6, which is a schematic top view of a display 100F according to a sixth embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that the display 100F of this embodiment has The number of display units 110 corresponding to a single conductive block 106 is multiple, and the number of display units 110 corresponding to a single conductive block 106 of the first embodiment is one. That is, for the grid 124 defined by the first trace 120 and the second trace 122, the number of corresponding display units 110 in a single grid 124 is multiple. In addition, the number of display units 110 corresponding to the single conductive block 106 drawn in this embodiment is an example, that is, the number of display units 110 corresponding to the single conductive block 106 can be adjusted according to the pixel requirements of the display.

In summary, the display of the present disclosure includes a display unit, a trace, and a conductive block. The trace can be connected to a DC power supply to have a positive or negative potential, and the conductive block is a floating potential. When the user scratches the structure surface of the display through the operating medium, the display medium can be in contact with the wiring and the conductive block at the same time, so that the conductive block is in a charged state, so that the conductive block can generate an electric field with the display medium of the display unit. When a colored display medium is attracted to the structural surface of the display due to an electric field, the display can present a corresponding color and thereby display the writing track of the operating medium.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (11)

A display includes: a first conductive layer; a plurality of display units disposed above the first conductive layer; a plurality of first traces disposed above the display units, wherein each of the first traces runs along a A first direction extends; a plurality of second traces are disposed above the display units, wherein each of the second traces extends along a second direction, and the first direction is different from the second direction; a second A conductive layer is disposed above the display units and is electrically insulated from the first and second traces, and a vertical projection of the second conductive layer on the first conductive layer and the display units The vertical projection on the first conductive layer at least partially overlaps, wherein the second conductive layer has a plurality of conductive blocks, and the first trace and the second trace exist between any adjacent two of the conductive blocks. One of the wires; and at least a DC power supply, which is electrically connected to the first wires and the second wires. The display according to item 1 of the scope of patent application, wherein each of the display units has at least a first display medium and at least a second display medium therein, and the first display medium and the second display medium have different Color, and the first display medium and the second display medium have opposite electrical properties. The display according to item 1 of the scope of patent application, further comprising: a first insulating layer disposed on the second conductive layer and having a plurality of openings, each of which is in a vertical projection direction of the first conductive layer. The openings overlap the first traces and the second traces, and partially overlap the conductive blocks adjacent to the first traces or the second traces. The display according to item 1 of the scope of patent application, wherein the first traces and the second traces are electrically connected to each other. The display according to item 1 of the scope of patent application, wherein the first traces and the second traces are electrically insulated from each other. The display according to item 5 of the scope of patent application, wherein each of the first traces includes a plurality of conductive line segments, and the display further includes: at least one jumper electrode for electrically connecting two of the conductive line segments Or, the jumper electrode crosses one of the second traces; and a second insulation layer is provided between the jumper electrode and the second trace. The display according to item 1 of the scope of patent application, wherein the second conductive layer has a floating potential. The display according to item 1 of the scope of patent application, wherein the first conductive layer has a plurality of pixel electrodes, and the display further includes a plurality of switching elements, and the switching elements are electrically connected to the pixel electrodes, respectively. The display device described in item 1 of the patent application scope further includes a plurality of photoelectric elements for generating a photocurrent after being illuminated, wherein the photoelectric elements are electrically connected to the conductive blocks respectively, and each of the photoelectric elements and One of the first traces and the second traces are electrically connected. The display device according to any one of the items 1 to 9 of the scope of patent application, wherein each of the conductive blocks is rectangular, and the length and width are A and B, when viewed from a viewing angle perpendicular to the second conductive layer, Where A ≧ B. The display according to item 10 of the scope of patent application, wherein viewed from a viewing angle perpendicular to the second conductive layer, the line width of each of the first traces and each of the second traces is L, and each of the conductive traces is L The minimum vertical distance between the block and the adjacent first traces and the second traces is X, and the display further includes: an input device having a body and a conductive end surface connected, wherein the conductive The outer diameter of the end face is R, and [B + 2X + L] ≧ R ≧ [L + X].