TWI474231B - Display device - Google Patents

Description

Display device

The present invention relates to an electronic device, and more particularly to a display device.

With the advancement of display technology, various display devices continue to evolve, and display devices equipped with touch panels are a major breakthrough in the history of science and technology. Currently, touch panels have been widely used in display devices. The touch panel provides the user with an intuitive operation function, and the user can directly issue an instruction by gesture, or directly click an option on the screen to issue an instruction.

The application of the touch panel has subverted the input mode of all electronic devices, making various display devices enter an era of innovation. Therefore, the invention of the touch panel is a very important milestone in the electronics industry.

The present invention relates to a display device that utilizes a transparent conductive layer design such that a user can see a uniform background color regardless of whether it is in a non-transmissive region or a light-transmitting region.

According to an aspect of the invention, a display device is proposed. The display device includes a display panel and a touch panel. The touch panel is disposed on the display panel. The touch panel includes a transparent substrate, a transparent conductive layer, a light shielding layer and a touch component. The transparent substrate has a non-transparent area and a light transmissive area. The transparent conductive layer is disposed on the transparent substrate and located in the non-transparent area. The light shielding layer is disposed on the transparent conductive layer and is located in the non-light transmitting region. Touch element is set to On the transparent substrate, and in the light transmission area.

In order to make the above-mentioned contents of the present invention more comprehensible, various embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

First embodiment

Please refer to FIG. 1 , which is a schematic diagram of a display device 100 according to a first embodiment. The display device 100 includes a display panel 110 and a touch panel 120 . The display panel 110 is, for example, a liquid crystal display panel, an organic light emitting diode display panel, or an electrophoretic display panel. The touch panel 120 is disposed on the display panel 110. The touch panel 120 includes a transparent substrate 121 , a transparent conductive layer 122 , a light shielding layer 123 , a touch component 124 , and an insulating layer 125 . The transparent substrate 121 has a light transmitting area 121A and a non-light transmitting area 121B. The light transmitting area 121A is used to penetrate light, and the non-light transmitting area 121B is used to set various lines or electronic components. The transparent substrate 121 is, for example, a transparent glass substrate or a transparent plastic substrate. The material of the transparent substrate 121 is, for example, a flexible substrate, a glass substrate, or a tempered glass substrate. The transparent substrate 121 serves as a carrier for each laminated structure. The transparent conductive layer 122 is disposed on the transparent substrate 121 and located in the non-transmissive region 121B. The transparent conductive layer 122 is used to transmit electrical signals. The material of the transparent conductive layer 122 is, for example, Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Indium Tin Zinc Oxide, Indium Gallium Zinc Oxide (Indium Tin Zinc Oxide) Indium Gallium Zinc Oxide) or polythiophene. The light shielding layer 123 is disposed on the transparent conductive layer 122 and located in the non-light transmitting region 121B. The light shielding layer 123 is used to shield the lines or each Kind of electronic components. The material of the light shielding layer 123 is, for example, ink or photoresist. The touch element 124 is disposed on the transparent substrate 121 and located in the light transmissive area 121A. The touch component 124 is configured to sense the touch signal, and the material is a transparent conductive material, for example, the same or different material as the transparent conductive layer 122. The insulating layer 125 is used to isolate lines that do not need to be turned on and to protect such lines.

As shown in FIG. 1, the transparent conductive layer 122 is disposed on the transparent substrate 121, partially located in the non-transmissive region 121B, and partially located in the transparent region 121A. The light shielding layer 123 is disposed on the transparent conductive layer 122 and located in the non-light transmitting region 121B. That is, in the non-light-transmitting region 121B, the transparent substrate 121, the transparent conductive layer 122, and the light-shielding layer 123 are sequentially viewed from the viewing surface of the user.

In addition, the touch element 124 is disposed on the transparent substrate 121 and located in the light transmissive area 121A. In one embodiment, the touch panel 120 is, for example, a single-layer glass touch (OGS), and the touch element 124 includes an X-axis touch line and a Y-axis touch line. When the user touches the transparent substrate 121 with a finger or an object, the touch element 124 can sense the position where the finger or the object contacts.

As described above, the transparent conductive layer 122 and the touch element 124 are both disposed on the transparent substrate 121 and disposed on the same plane. When the first light L11 is incident on the transparent conductive layer 122 and folded back, the background color of the bluish background is displayed; When the second light L12 is incident on the touch element 124 and folded back, it will also exhibit a bluish background color. In this way, the user can see a similar background color in the light transmitting area 121A or the non-light transmitting area 121B without significantly perceiving the existence of the light shielding layer 123 of the non-light transmitting area 121B.

In addition, when the transparent conductive layer 122 and the touch element 124 are made of the same material When the first light L11 and the second light L12 are folded back, the background color will also be similar.

Moreover, the thickness D11 of the transparent conductive layer 122 and the thickness D12 of the touch element 124 may be substantially the same or different. When the thickness D11 of the transparent conductive layer 122 is substantially the same as the thickness D12 of the touch element 124, the first light ray L11 and the second light ray L12 may be substantially blue.

In one embodiment, the transparent conductive layer 122 and the touch element 124 are made of indium tin oxide, indium zinc oxide, indium tin zinc oxide or indium gallium zinc oxide, and the thickness D11 and the thickness D12 may be 100~. 2000 angstroms.

In another embodiment, when the transparent conductive layer 122 and the touch element 124 are made of polythiophene, the thickness D11 and the thickness D12 may be 1 to 10 micrometers.

In addition, the pattern of the transparent conductive layer 122 may be substantially the same as the pattern of the light shielding layer 123, or the pattern of the transparent conductive layer 122 may be larger than the pattern of the light shielding layer 123 to effectively reduce the light shielding layer 123 of the non-light transmitting region 121B. The visual presence.

Moreover, the transparent conductive layer 122 is disposed on the non-transmissive region 121B and surrounds the touch element 124, so that the transparent conductive layer 122 can generate a function of noise shielding.

In addition, in an embodiment, the X-axis touch line and the Y-axis touch line of the touch element 124 may extend to the transparent conductive layer 122, so that the non-transmissive area 121B also has a proximity sensing function.

Please refer to FIGS. 2A-2E for a flowchart of a method of manufacturing the touch panel 120 of the first embodiment. First, as shown in FIG. 2A, a transparent substrate 121 is provided. Next, as shown in FIG. 2B, in the non-transmissive region 121B The transparent conductive layer 122 is formed and the touch element 124 is formed in the transparent region 121A. The steps of forming the transparent conductive layer 122 and the touch element 124 can be performed in the same step by the same mask process or in different steps. The step of forming the transparent conductive layer 122 and the touch element 124 is completed in the same step, so that the thickness D11 of the transparent conductive layer 122 and the thickness D12 of the touch element 124 are substantially the same.

Then, as shown in FIG. 2C, a light shielding layer 123 is formed on the transparent conductive layer 122 in the non-light transmitting region 121B.

Then, as shown in FIG. 2D, a metal wiring layer 126 is formed on the non-transmissive region 121B to transmit the sensing signal of the touch component 124 to a processing unit (not shown).

Then, as shown in FIG. 2E, the insulating layer 125 is formed to cover the transparent substrate 121, the transparent conductive layer 122, the touch element 124, and the metal wiring layer 126. Thus, the touch panel 120 of the present embodiment is formed.

In general, the steps of forming the transparent conductive layer 122 and the touch element 124 must apply a higher process temperature. The light shielding layer 123 of the embodiment is formed behind the transparent conductive layer 122 and the touch element 124. Therefore, if the light shielding layer 123 is made of a material that is not resistant to high temperatures, in the step of forming the light shielding layer 123, the process temperature of the transparent conductive layer 122 and the touch element 124 need not be considered.

Second embodiment

Please refer to FIG. 3 , which is a schematic diagram of the display device 200 of the second embodiment. The display device 200 of the present embodiment is different from the display device 100 of the first embodiment in the design of the touch element 224, and the rest is the same. The description will not be repeated.

As shown in FIG. 3, the display device includes a display panel 210 and a touch panel 220. The touch panel 220 includes a transparent substrate 221 , a transparent conductive layer 222 , a light shielding layer 223 , a touch element 224 , and an insulating layer 225 . The transparent conductive layer 222 is disposed on the transparent substrate 221 and is located in the non-transmissive region 221B. The light shielding layer 223 is disposed on the transparent conductive layer 222 and is located in the non-light transmitting region 221B. The insulating layer 225 covers the transparent substrate 221 and the light shielding layer 223. The touch element 224 is disposed on the insulating layer 225. The touch element 224 is, for example, a film type or a glass type touch panel, wherein the glass touch panel is, for example, single-sided ITO (SITO) or double-sided (Double-sided). ITO, DITO).

When the first light L21 of the non-transmissive region 221B is incident on the transparent conductive layer 222 and folded back, a blue background color is displayed; when the second light L22 of the light-transmitting region 221A is incident on the touch element 224 and is folded back, Will give a bluish background color. In this way, the user can see a similar background color in the light-transmitting region 221A or the non-light-transmitting region 221B without significantly perceiving the existence of the light-shielding layer 223 of the non-light-transmitting region 221B.

Please refer to FIGS. 4A-4D , which are flowcharts illustrating a method of manufacturing the touch panel 220 of the second embodiment. First, as shown in FIG. 4A, a transparent substrate 221 is provided. Next, a transparent conductive layer 222 is formed on the transparent substrate 221 in the non-transmissive region 221B.

Then, as shown in FIG. 4B, a light shielding layer 223 is formed on the transparent conductive layer 222 in the non-light transmitting region 221B.

Next, as shown in FIG. 4C, an insulating layer 225 is formed on the transparent substrate 221 and the light shielding layer 223.

Then, as shown in FIG. 4D, the touch element 224 is formed on the insulating layer 225.

Third embodiment

Referring to FIG. 5, a schematic diagram of a display device 300 of a third embodiment is shown. The display device 300 of the present embodiment is different from the display device 200 of the second embodiment in the design of the transparent conductive layer 322, and the rest of the same is not repeated.

As shown in FIG. 5 , the display device 300 includes a display panel 310 and a touch panel 320 . The touch panel 320 includes a transparent substrate 321 , a transparent conductive layer 322 , a light shielding layer 323 , a touch component 324 , and an insulating layer 325 . The transparent conductive layer 322 is disposed on the transparent substrate 321 and is located in the non-transmissive region 321B and the light-transmitting region 321A. The transparent conductive layer 321 is a one-sided structure that can be patterned or not patterned. The light shielding layer 323 is disposed on the transparent conductive layer 322 and located in the non-light transmitting region 321B. The insulating layer 325 covers the transparent conductive layer 322 and the light shielding layer 323. The touch element 324 is disposed on the insulating layer 325.

When the first light L31 of the non-transmissive region 321B is incident on the transparent conductive layer 322 and folded back, a blue background color is displayed; when the second light L32 of the light-transmitting region 321A is incident on the transparent conductive layer 322 and is folded back, Will give a bluish background color. In this way, the user can see a uniform background color in the light-transmitting region 321A or the non-light-transmitting region 321B without significantly perceiving the existence of the light-shielding layer 323 of the non-light-transmitting region 321B.

Please refer to FIGS. 6A-6C for a flowchart of a method of manufacturing the touch panel 320 of the third embodiment. First, as shown in Figure 6A, provide The substrate 321 is shown. Next, a transparent conductive layer 322 is formed on the entire surface in the non-transmissive region 321B and the light-transmitting region 321A.

Then, as shown in FIG. 6B, a light shielding layer 323 is formed on the transparent conductive layer 322 in the non-light transmitting region 321B.

Next, as shown in FIG. 6C, an insulating layer 325 is formed on the transparent conductive layer 322 and the light shielding layer 323. Then, the touch element 324 is formed on the insulating layer 325.

In view of the above, the present invention has been disclosed in various embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100, 200, 300, 400‧‧‧ display devices

110, 210, 310‧‧‧ display panels

120, 220, 320‧‧‧ touch panels

121, 221, 321‧‧ ‧ transparent substrate

121A, 221A, 321A‧‧‧ light transmission area

121B, 221B, 321B‧‧‧ non-transparent area

122, 222, 322‧‧‧ transparent conductive layer

123, 223, 323‧‧ ‧ shading layer

124, 224, 324‧‧‧ touch elements

125, 225, 325‧ ‧ insulation

126‧‧‧Metal wire layer

D11, D12‧‧ thickness

L11, L21, L31‧‧‧ first light

L12, L22, L32‧‧‧second light

FIG. 1 is a schematic view showing a display device of the first embodiment.

2A-2E are flowcharts showing a method of manufacturing the touch panel of the first embodiment.

FIG. 3 is a schematic view showing the display device of the second embodiment.

4A to 4D are flowcharts showing a method of manufacturing the touch panel of the second embodiment.

FIG. 5 is a schematic view showing the display device of the third embodiment.

6A-6C are flowcharts showing a method of manufacturing the touch panel of the third embodiment.

100‧‧‧ display device

110‧‧‧ display panel

120‧‧‧Touch panel

121‧‧‧Transparent substrate

121A‧‧‧Light transmission area

121B‧‧‧ non-transparent area

122‧‧‧Transparent conductive layer

123‧‧‧ shading layer

124‧‧‧Touch components

125‧‧‧Insulation

126‧‧‧Metal wire layer

D11, D12‧‧ thickness

L11‧‧‧First light

L12‧‧‧second light

Claims (12)

A display device includes: a display panel; and a touch panel disposed on the display panel, wherein the touch panel comprises: a transparent substrate having a non-transparent area and a transparent area; a transparent conductive a layer disposed on the transparent substrate and located in the non-transmissive region; a light shielding layer disposed on the transparent conductive layer and located in the non-transmissive region; a touch component disposed on the transparent substrate and located at the transparent substrate a light-transmissive region; and an insulating layer disposed on the transparent substrate and the light-shielding layer, wherein the touch component is disposed on the insulating layer. The display device of claim 1, wherein the transparent conductive layer and the touch element are disposed on a same plane. The display device of claim 2, wherein the transparent conductive layer and the touch element have substantially the same thickness. The display device of claim 1, wherein the transparent conductive layer is located further in the light transmissive region. The display device of claim 1, wherein the transparent conductive layer is a patterned electrode. The display device of claim 5, wherein the transparent conductive layer and the light shielding layer have substantially the same pattern. The display device of claim 1, wherein the transparent conductive layer and the touch element comprise indium tin oxide, indium zinc oxide, indium tin zinc oxide, indium gallium zinc oxide or polythiophene. . The display device of claim 7, wherein the transparent conductive layer and the touch element are made of the same material. The display device of claim 8, wherein the transparent conductive layer and the touch element are made of indium tin oxide, indium zinc oxide, indium tin zinc oxide or indium gallium zinc oxide. The conductive layer and the touch element have a thickness of 100 to 2000 angstroms. The display device of claim 8, wherein the transparent conductive layer and the touch element are made of polythiophene, and the transparent conductive layer and the touch element have a thickness of 1 to 10 micrometers. The display device of claim 1, wherein the display panel is a liquid crystal display panel, an organic light emitting diode display panel or an electrophoretic display panel. The display device according to claim 1, wherein the transparent substrate is made of a flexible substrate, a glass substrate or a tempered glass substrate.