CN101452124B - Display panel with protective structure and image display system using the display panel - Google Patents

Abstract

The invention relates to a display panel with protection structure and image display system using the display panel, the display panel includes: a panel internal area controlled to display an image; a bonding region disposed on one side of the panel inner region and provided with a conductive wire and a flat layer; and a protection structure covering the wires and the flat layer.

Description

Display panel with protective structure and image display system using the display panel

technical field

The invention relates to a display panel and an image display system using the display panel, in particular to a display panel with a protective structure and an image display system using the display panel.

Background technique

Please refer to FIG. 1 , which is a schematic structural diagram of a liquid crystal display module (LCM), which is mainly obtained by integrating a liquid crystal display panel 11 , a driving and control circuit 12 and a backlight panel 13 . The liquid crystal display panel 11 usually has a bonding area 112 formed by the lower substrate 110 being longer than the upper substrate 111, which is usually called an Outer Lead Bonding (OLB) area, which is mainly for providing The outwardly extending wires 113 inside the display panel 11 are electrically bonded with the outwardly extending wires 120 of the driving and control circuit 12 .

Due to the characteristics of thinness, lightness, low power consumption, and low radiation, flat-panel displays with liquid crystal display modules as the main body have replaced traditional image tube displays and become the mainstream of the market. As most portable electronic devices are equipped with liquid crystal display modules, the liquid crystal display module must be able to overcome the severe test of temperature/humidity due to the frequent changes in the working environment, and in order to ensure that its design can handle the temperature/humidity Humidity changes, the temperature and humidity cycle test shown in Figure 2 came into being. The test usually consists of multiple (for example, 36) cycles, and one cycle is 8 hours, in which the temperature rises from 30°C to 65°C in the first 1.5 hours, then maintains at 65°C for 4 hours, and then reuses Decrease from 65°C to 30°C in 1.5 hours, then maintain at 30°C for 1 hour, and increase the humidity from 50% to 93%, then maintain until the end of the test.

In the conventional structure, the wires 113 on the bonding region 112 are mainly covered and protected by a non-conductive flat layer 114, but the conventional structure is mostly covered with a photoresist material (Photo-resist Materials) ) the completed flat layer 114 still cannot completely block the intrusion of water vapor, so that the metal that completes the wire 113 is still in a state of corrosion, and how to improve this defect is the main purpose of future development.

Contents of the invention

The purpose of the present invention is to provide a display panel with a protective structure and an image display system using the display panel.

The present invention is a display panel, which includes: a panel inner area located on a substrate, which is controlled to display images; a bonding area located on the substrate and adjacent to the side of the panel inner area, on which A wire and a flat layer are provided; and a protection structure covers the wire and the flat layer, the protection structure is a transparent electrode structure, and exists in a floating manner without contacting any conductor in the inner area of the panel In contact, the transparent electrode structure can be completed while defining a pixel electrode in the inner region of the panel.

According to the above solution, in the display panel of the present invention, the bonding area can be an external lead bonding area.

According to the above solution, in the display panel of the present invention, the wire is a metal wire extending from a data wire in the inner area of the panel.

According to the above solution, in the display panel of the present invention, the flat layer is made of a photoresist material.

According to the above solution, in the display panel of the present invention, the transparent electrode structure maintains a safe distance from the edge of the inner region of the panel, and the safe distance is about 90 to 110 μm.

According to the above solution, in the display panel of the present invention, wherein the transparent electrode structures will individually cover the corresponding wires, the line width of the transparent electrode structure can be set to be about 0.75+/-0.05 μm wider than the wires , and the distance between adjacent transparent electrode structures is at least about 3.5+/-0.05 μm.

According to the above solution, in the display panel of the present invention, an electrostatic discharge protection circuit in the bonding area can be covered by a whole piece of transparent electrode structure.

According to the above solution, in the display panel of the present invention, the transparent electrode structure is made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).

Another aspect of the present invention is an image display system, including the above-mentioned display panel; and a power supply, coupled to the aforementioned display panel and providing power to the aforementioned display panel.

According to the above scheme, the image display system of the present invention, wherein the aforementioned image display system is a mobile phone, a digital camera, a personal digital assistant, a notebook computer, a desktop computer, a television, a global positioning system, A car display, an aviation display, a digital photo frame or a portable DVD player.

According to the above solution, in the image display system of the present invention, the aforementioned display panel is a liquid crystal display or an organic light emitting diode display panel.

Therefore, the display panel proposed by the present invention can block the intrusion of moisture, thereby achieving the purpose of improving the defects of conventional structures.

Description of drawings

FIG. 1 is a schematic diagram of a traditional structure of a liquid crystal display module.

FIG. 2 is a schematic diagram of a temperature and humidity cycle test.

FIG. 3 is a schematic diagram of the structure of a liquid crystal display module developed by the present invention.

4(a) and 4(b) are respectively a cross-sectional view and a schematic top view of the structure of the first preferred embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of another embodiment of an image display system completed by applying the technical means of the present invention.

And, each reference numeral in the above-mentioned drawings is explained as follows:

11 Display panel 12 Driving and control circuit

13 backlight panel 110 lower substrate

111 upper substrate 112 bonding area

113 wire 114 flat layer

120 wire

21 Liquid crystal display panel 22 Driving and control circuit

23 backlight panel 210 lower substrate

211 upper substrate 212 bonding area

213 wire 220 wire

214 flat layer 215 protective structure

40 Bonding area 401 Conductor

402 flat layer 403 transparent electrode structure

41 panel inner area 411 pixel electrodes

50 Joint area 51 Panel inner area

D Safe distance 410 liquid crystal molecules

501 wire 502 flat layer

503 Insulation structure 600 Image display system

500 Power Supply 10 LCD Display

Detailed ways

Since the conventional structure only utilizes a flat layer to cover the protective wire, the purpose of preventing the wire from rusting cannot be achieved. In order to effectively improve the defects of the conventional structure, the present invention develops a schematic cross-sectional view of the wire structure as shown in FIG. 3 . FIG. 3 shows a schematic structural diagram of a liquid crystal display module (LCM for short), which is mainly obtained by integrating a liquid crystal display panel 21 , a driving and control circuit 22 and a backlight panel 23 . The liquid crystal display panel 21 usually has a lower substrate 210 longer than the upper substrate 211 to produce a joint region 212, which is mainly provided for the externally extending wires 213 inside the liquid crystal display panel 21 and the drive and control circuit 22. The wires 220 extending outward are electrically bonded. The main purpose of the present invention is to add a protection structure 215 above the conductive wire 213 and the flat layer 214 in the bonding area 212 to prevent the intrusion of moisture, thereby achieving the purpose of improving the defects of the conventional structure.

Please refer to Fig. 4 (a), which is a schematic diagram of the structure of the first preferred embodiment of the present invention, which is mainly divided into a panel interior area 41 and a joint area 40 adjacent to the panel interior area 41 side, and the panel interior area 41 mainly has the main part of the liquid crystal display panel, such as the unmarked thin film transistor array (TFT array), liquid crystal molecules 410, pixel electrodes 411 and other structures, which are used to control and change the brightness to display images. In this preferred embodiment, a transparent electrode structure 403 is mainly covered on the bonding area 40 above the wire 401 and the flat layer 402 to prevent the wire 401 from being corroded by external moisture. It is worth noting here that, since in the normal thin film transistor process, the last process is usually to define the transparent electrode layer used as the material of the pixel electrode 411, so the transparent electrode structure 403 required in this embodiment, This process can be used to complete all together, only need to change the pattern of the mask slightly, without adding any substantial cost or man-hours. In addition, it is suggested that the transparent electrode structure 403 above the bonding area 40 of the present invention exist in a floating manner, that is, it does not contact any conductors in the inner area 41 of the other panel, and is preferably connected to the inner area of the panel. 41 Keep a safe distance D (for example, about 90 to 110 μm) at the edge to play the role of a protective structure, and then use transparent electrode structures that are mostly completed with transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide (IZO) The 403 is good at absorbing water vapor, which minimizes the water vapor that may intrude into the wire 401 . In this way, the defects of conventional structures can be effectively improved, and then the main purpose of developing the present invention can be achieved.

On the pattern design of the mask, it can be completed according to the principle shown in FIG. 4(b). Fig. 4(b) is a top view of part of the bonding area in Fig. 4(a). Since the wire 401 is usually an outward extension of the data line (data line) in the panel, the distance between two adjacent lines is quite close, and in order to maintain good electrical properties, the transparent electrode structure 403 defined by the mask is used to cover the individual wires. For the corresponding wire 401, the line width of the transparent electrode structure 403 can be set to be about 0.75+/-0.05 μm wider than the wire 401, and the distance between adjacent transparent electrode structures 403 should be set at least about 3.5+ /−0.05 μm, as for the electrostatic discharge protection circuit (not shown in the figure) in the bonding area 40 , it can be covered by the whole transparent electrode structure 403 .

Of course, it is also feasible to use other materials to complete the above protective structure, but it needs to be defined by adding an additional process after the flat layer is completed. The schematic diagram of another preferred embodiment after completion can be seen in Figure 5. The main An insulating structure 503 is covered above the wire 501 and the flat layer 502 on the bonding area 50 to prevent the wire 501 from being corroded by external moisture. It is worth noting here that the insulating structure 503 disposed above the bonding region 50 in this embodiment can cover a large area, thereby minimizing moisture that may intrude into the wire 501 . The insulating structure 503 can be realized by common insulating materials commonly used in semiconductor technology such as silicon oxide or silicon nitride, which can effectively improve the defects of conventional structures, and thus achieve the main purpose of the development of the present invention.

Please refer to FIG. 6 again, which is a schematic diagram of an image display system of another embodiment implemented by applying the technical means of the present invention. In this embodiment, an image display system 600 is mainly disclosed, which may include a liquid crystal display 10 and a power supply 500 . The liquid crystal display 10 is mainly completed by the liquid crystal display module shown in FIG. 3 , and the power supply 500 is coupled to the liquid crystal display 10 to provide power to the liquid crystal display 10 . As for the image display system 600, it can be: mobile phone, digital camera, personal digital assistant, notebook computer, desktop computer, television, global positioning system (GPS), vehicle display, aviation display, digital photo frame (Digital Photo Frame) ) or any of the devices such as portable DVD players. In addition, the technical means of the present invention can be transferred to other types of display panels, such as display panels completed with organic light emitting diodes (Organic Light Emitting Diode, OLED). Therefore, the present invention can be changed and modified by those skilled in the art without departing from the protection scope of the appended claims.

Claims (8)

1. display panel, it comprises:

An intralamellar part zone is positioned on the substrate, and it is controlled in order to show image;

One engaging zones is positioned on this substrate and a side of adjacent this panel interior area, and it is provided with a lead and a flatness layer; And

One protection structure; Be covered in the top of this lead and this flatness layer; This protection is configured to transparency electrode structure; And with the suspension joint mode exist and not with this panel interior area in any conductor contact, said transparency electrode structure can be accomplished when the pixel electrode in this panel interior area of definition in the lump.

2. display panel as claimed in claim 1; Wherein this engaging zones can be an outer pin bonding land; It is in order to electrically to engage this panel interior area with a control circuit; And this lead is a plain conductor, and it is for extending the data line from this panel interior area, is a photo anti-corrosion agent material as for the material of this flatness layer.

3. display panel as claimed in claim 1; Wherein this transparency electrode structure keeps a safe distance with this panel interior area edge; This safe distance is 90 to 110 μ m; And this transparency electrode structure will cover corresponding this lead individually, and the live width of its transparency electrode structure can be set at wideer between 0.75+/-0.05 μ m than this lead, and then be set at least at a distance of between 3.5+/-0.05 μ m between adjacent transparency electrode structure.

4. display panel as claimed in claim 1, wherein the enough full wafer transparency electrodes of the ability of the ESD protection circuit in this engaging zones are constructed and are covered.

5. display panel as claimed in claim 1, wherein this transparency electrode structure is accomplished with tin indium oxide or indium zinc oxide material.

6. image display system comprises:

Display panel as claimed in claim 1; And

One power supply unit is coupled to aforementioned display panel and power supply to aforementioned display panel is provided.

7. image display system as claimed in claim 6, wherein aforementioned image display system are that a mobile phone, a digital camera, a personal digital assistant, a mobile computer, a desktop PC, a TV, a GPS, an automobile-used display, an aviation are with display, a digital frame or a Portable DVD projector.

8. image display system as claimed in claim 6, wherein aforementioned display panel are a LCD or an organic LED display panel.

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