WO2011103804A1

WO2011103804A1 - Touch screen and hand-held device provided with the same

Info

Publication number: WO2011103804A1
Application number: PCT/CN2011/071215
Authority: WO
Inventors: 李勇
Original assignee: 华为终端有限公司
Priority date: 2010-02-24
Filing date: 2011-02-24
Publication date: 2011-09-01
Also published as: CN201583922U

Abstract

A touch screen and a hand-held device provided with the same are disclosed, which relate to the technical field of hand-held devices, and are designed to enable the touch screen and the hand-held device to have a smaller thickness and a lower cost. The touch screen comprises a transparent substrate; the pattern of an Organic Light Emitting Diode (OLED) panel structure is arranged on one surface of the transparent substrate, and the pattern of the OLED panel structure is used for realizing the function of display; and the pattern of a touch control pad structure is arranged on the other opposite surface of the transparent substrate, and the pattern of the touch control pad structure is used for realizing the function of touch control. The hand-held device provided with the touch screen comprises a housing in which the touch screen is arranged. This invention can be applied to the hand-held devices.

Description

Touching the handheld device with the touch

The present application claims priority to Chinese Patent Application No. 201020117731.1, entitled "Touch Screen and Handheld Device with the Touch Screen", filed on February 24, 2010, the entire contents of which is incorporated herein by reference. in. Technical field

The present invention relates to the field of handheld devices, and in particular, to a touch screen and a handheld device having the same. Background technique

In the field of flat panel display technology, OLEDs, that is, organic light emitting diodes (Organic Light Emitting Diodes), also known as organic electroluminescence displays have the characteristics of lightness, power saving, etc., and thus have been obtained on MP3 players. Widely used. Moreover, its application range has been extended to mobile phones, game consoles and the like with larger handheld devices.

Unlike a conventional liquid crystal display (LCD), the 0LED display technology does not require a backlight, but instead, as shown in FIG. 1, a display substrate 11 having a small thickness is used, and an organic material pattern is disposed on the display substrate 11. Layer 12, when a current is passed, the organic material layer 12 emits red, green, and blue light to display different images and colors.

However, with the development of touch screen technology, it is hoped that a touch function can be added to a handheld device using 0LED to form a touch screen, thereby inputting instructions through the touch screen to make human-computer interaction more convenient.

The prior art 1 provides a touch screen structure, specifically adding a feeling in a 0 LED handheld device. The light sensor recognizes the user's command by the light change detected by the photosensitive sensor, thereby implementing the touch function. However, the cost of the photosensitive sensor in this structure is high, which is not conducive to popular use. In the prior art, another touch screen structure is provided. As shown in FIG. 2, an independent touch panel is formed. The touch panel includes a touch substrate 21, and the touch pattern 22 is formed on the touch substrate 21. The display substrate 11 and the touch substrate 21 are fixed together, for example, by bonding together to form a touch screen. However, this structure has a large amount of materials, which results in a large thickness and a high cost. In the process of implementing the above-mentioned use, the inventors have found that at least the following problems exist in the prior art: The touch screen in the prior art has a large thickness and a high cost. Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a touch screen capable of having a small thickness and a low cost. In order to solve the above technical problem, the embodiment of the present invention adopts the following technical solutions: A touch screen includes a transparent substrate, and an OLED board structure pattern is disposed on one surface of the transparent substrate, and the 0 LED board structure pattern is used for implementing a display function. And a touch panel structure pattern is disposed on the other opposite surface of the transparent substrate, and the touch panel structure pattern is used to implement a touch function. The touch screen provided by the embodiment of the present invention has a 0 LED board structure pattern on one surface of the transparent substrate and a touch panel structure pattern on the other opposite surface, so the 0 LED board structure pattern and the touch The board structure pattern can share the transparent substrate, which saves the use of the substrate, so that the touch screen formed by the combination of the OLED board structure pattern and the touch panel structure pattern has a small thickness and a low cost. Another technical problem to be solved by embodiments of the present invention is to provide a hand with a touch screen. With equipment, it can have a small thickness and a low cost.

To solve the above technical problem, the embodiment of the present invention adopts the following technical solutions:

A handheld device with a touch screen includes a housing, the housing is provided with a touch screen, the touch screen includes a transparent substrate, and an OLED board structure pattern is disposed on one surface of the transparent substrate, and the 0 LED board structure pattern is a touch panel structure pattern is disposed on another opposite surface of the transparent substrate, the touch panel structure pattern is used to implement a touch function, and the touch panel structure pattern faces the The exterior of the housing.

The handheld device with a touch screen provided by the embodiment of the present invention has a 0 LED board structure pattern on one surface of the transparent substrate and a touch panel structure pattern on the other opposite surface, so the 0 LED board structure pattern and The touch panel structure pattern can share the transparent substrate, which saves the use of the substrate, so that the touch screen formed by combining the 0 LED board structure pattern and the touch panel structure pattern has a smaller thickness and lower the cost of.

DRAWINGS

1 is a schematic view showing the structure of an 0 LED board in the prior art;

2 is a schematic view showing a combination of an 0 LED board and a touch panel in the prior art to form a touch screen;

3 is a schematic structural diagram of a touch screen according to an embodiment of the present invention;

4 is a schematic structural view of the touch screen shown in FIG. 3;

FIG. 5 is a schematic structural diagram of a handheld device with a touch screen according to an embodiment of the present invention.

detailed description

Embodiments of the present invention are directed to a touch screen and a handheld device having the same that can have a small thickness and a low cost.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in FIG. 3, the touch screen of the embodiment of the present invention includes a transparent substrate 31 on the transparent substrate 31. An OLED board structure pattern 32 is provided on one surface, and the 0 LED board structure pattern 32 is used to implement a display function, and a touch panel structure pattern 33 is provided on the other opposite surface of the transparent substrate 31, and the touch panel structure pattern 33 is used for Implement touch function.

In the touch panel of this embodiment, since the OLED board structure pattern 32 is provided on one surface of the transparent substrate 31 and the touch panel structure pattern 33 is provided on the other opposite surface, the OLED board structure pattern 32 and the touch panel structure pattern are provided. The transparent substrate 31 can be shared, which saves the use of the substrate, so that the touch panel formed by combining the OLED panel structure pattern 32 and the touch panel structure pattern 33 has a small thickness and a low cost.

It should be noted that the transparent substrate 31 can transmit light emitted from the 0 LED board structure pattern 32, thereby realizing the display function of the touch screen. Further, the transparent substrate 31 may be a transparent glass substrate, a transparent quartz substrate or a transparent plastic substrate.

As shown in Fig. 3, the above-mentioned 0 LED board structure pattern 32 includes a hole transport layer 321, a organic light-emitting layer 322, an electron transport layer 32 3, a metal cathode layer 324, and the like which are sequentially formed on the transparent substrate 31 by a patterning process.

Among them, 0LED belongs to the carrier double injection type light-emitting device, and the light-emitting mechanism is: under the driving of the external voltage, the holes injected by the anode and the electrons injected by the cathode are combined in the organic material to release energy, and the energy is The molecules that are transmitted to the organic material, so that the molecules of the organic material are excited to transition from the ground state to the excited state, and when the excited molecules return to the ground state, the radiation transitions to generate luminescence.

Specifically, in this embodiment, holes injected by the anode migrate to the organic light-emitting layer 322 via the transport of the hole transport layer 321; the metal cathode layer 324 cooperates with the anode to generate an electric field, and the metal cathode layer 324 can generate electrons; The electrons injected by the metal cathode layer 324 migrate to the organic light-emitting layer 322 via the transport of the electron transport layer 32 3; the holes and electrons recombine in the organic light-emitting layer 322, thereby making the organic The material molecules of the luminescent layer are excited to eventually produce luminescence. The organic light-emitting layer 322 includes a plurality of pixel units composed of three colors of red, green, and blue, and a plurality of pixel units can display different images.

The patterning process in this embodiment may include various processes such as deposition, exposure, development, etching, photoresist stripping, evaporation, and the like.

As shown in FIG. 3, the touch panel structure pattern 33 includes a flexible line (FPC, Flexi bl e Pr inted Ci rcui t) layer (or a thermocompression conductive paper (Hea t) which is sequentially formed on the transparent substrate 31 by a patterning process. Sea l) layer 331 and an indium tin oxide polyester film (ITO PET) layer 332. The flexible circuit layer (hot-press conductive paper layer) 331 can be connected to the driving circuit of the touch screen, and the driving circuit can transmit instruction information input by the user. Indium tin oxide polyester film layer 332 is used to electrically connect each touch sensing unit.

As shown in FIG. 4, in this embodiment, a transparent protective layer 34 is disposed on the touch panel structure pattern 33 compared to the touch screen shown in FIG. The transparent protective layer 34 may be made of a transparent plastic material or a transparent resin material, or may be made of a transparent substrate having a small thickness. The transparent protective layer 34 can protect the touch panel structure pattern 33 from being worn or slipped. In addition, the transparent protective layer 34 makes the touch screen more beautiful in appearance and more comfortable to use, improves the user experience, and improves the market competitiveness of the touch screen product.

In summary, the touch screen provided by the embodiment of the present invention has an OLED panel structure pattern on one surface of the transparent substrate and a touch panel structure pattern on the other opposite surface. And the touch panel structure pattern can share the transparent substrate, thereby saving the use of the substrate, so that the touch screen formed by combining the 0 LED board structure pattern and the touch panel structure pattern has a smaller thickness and Low cost. In addition, the embodiment of the invention further provides a handheld device with a touch screen. As shown in FIG. 5, the touch screen-equipped handheld device includes a housing 4 in which a touch screen 3 is disposed. Referring to FIG. 3, the touch screen 3 includes a transparent substrate 31, and an OLED board structure pattern 32 is provided on one surface of the transparent substrate 31. The 0 LED board structure pattern 32 is used for performing a display function on the other opposite surface of the transparent substrate 31. A touch panel structure pattern 33 is provided, and the touch panel structure pattern 33 is used to implement a touch function, and the touch panel structure pattern 33 faces the outside of the housing 4. In the handheld device with a touch screen in this embodiment, since the OLED board structure pattern 32 is provided on one surface of the transparent substrate 31 and the touch panel structure pattern 33 is provided on the other opposite surface, the OLED board structure pattern 32 and the touch The control board structure pattern 33 can share the transparent substrate 31, which saves the use of the substrate, so that the touch panel 3 formed by combining the 0 LED board structure pattern 32 and the touch panel structure pattern 33 has a small thickness and a low cost. It should be noted that the structure and function of the touch screen in the embodiment are the same as those of the touch screen in the foregoing embodiment, and details are not described herein again. The handheld device with the touch screen can be a mobile phone, a game machine, an MP3, an MP4, an MP5 player, a personal digital assistant (PDA), a digital photo frame, and the like.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A touch panel, comprising: a transparent substrate, on one surface of the transparent substrate, an OLED board structure pattern, wherein the OLED board structure pattern is used for realizing a display function, and another one of the transparent substrate A touchpad structure pattern is disposed on the opposite surface, and the touchpad structure pattern is used to implement a touch function.

The touch panel according to claim 1, wherein the transparent substrate is a transparent glass substrate, a transparent quartz substrate or a transparent plastic substrate.

The touch panel according to claim 1 or 2, wherein the OLED board structure pattern comprises a hole transport layer, an organic light-emitting layer, an electron transport layer, and a metal which are sequentially formed on the transparent substrate by a patterning process. Cathode layer.

The touch panel structure according to claim 1 or 2, wherein the touch panel structure pattern comprises a flexible circuit layer or a thermoconductive conductive paper layer which is sequentially formed on the transparent substrate by a patterning process, and indium tin Oxide polyester film layer.

The touch screen according to claim 4, wherein a transparent protective layer is disposed on the touch panel structure pattern.

6. A handheld device with a touch screen, comprising: a housing, wherein the housing is provided with a touch screen, the touch screen comprises a transparent substrate, and an OLED board structure pattern is disposed on one surface of the transparent substrate, The OLED structure pattern is used to implement a display function, and a touch panel structure pattern is disposed on another opposite surface of the transparent substrate, wherein the touch panel structure pattern is used to implement a touch function, and the touch The plate structure pattern faces the outside of the housing.

The handheld device with a touch screen according to claim 6, wherein the transparent substrate is a transparent glass substrate, a transparent quartz substrate or a transparent plastic substrate.

The handheld device with a touch screen according to claim 6 or 7, wherein the OLED board structure pattern comprises a hole transport layer, an organic light-emitting layer, and an electron formed on the transparent substrate in sequence by a patterning process. Transport layer and metal cathode layer.

The handheld device with a touch screen according to claim 6 or 7, wherein the touch panel structure pattern comprises a flexible circuit/heat-conductive conductive paper layer which is sequentially formed on the transparent substrate by a patterning process, And an indium tin oxide polyester film layer.

The handheld device with a touch screen according to claim 9, wherein a transparent protective layer is disposed on the touch panel structure pattern.