CN201066415Y

CN201066415Y - CSTN LCD screen

Info

Publication number: CN201066415Y
Application number: CNU200620017978XU
Authority: CN
Inventors: 方少敏
Original assignee: BYD Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2006-08-28
Filing date: 2006-08-28
Publication date: 2008-05-28
Anticipated expiration: 2016-08-28

Abstract

The utility model discloses a CSTN liquid crystal display, which comprises an upper ITO conductive glass, a lower ITO conductive glass and a STN liquid crystal layer sandwiched between the upper ITO conductive glass and the lower ITO conductive glass, wherein, SEG lines are etched on the upper ITO conductive glass, COM lines are etched on the lower ITO conductive glass and icons are also etched on upper ITO conductive glass. An icon displayed on the screen of the liquid crystal display of the utility model is directly formed by an electrode plate rather than the combination of pixel points; the icon does not need to occupy the space of a DRAM because no pixels exist, thus realizing a larger display area. Meanwhile, because the icon is normally monochromic, a monochromical film rather than a colorful film can be used in the icon area, thus saving the cost. Because the display method only needs to gate the SEG lines, the control is simpler.

Description

A kind of CSTN LCDs

[technical field]

The utility model relates to a kind of LCDs, particularly a kind of CSTN screen display screen.

[background technology]

Since lcd technology is succeeded in developing, because it has the little power consumption of low-voltage, made the development of mutually promoting of its and large scale integrated circuit, advantage that its flat structure demonstration, display message amount are big or the like; In addition, liquid crystal also has pollution-free, the long-life, is easy to colorize or the like excellent specific property.So now be widely used on mobile phone, portable computer or the like the mobile electronic device.

Simultaneously along with the fast development of mobile communication, the popularity rate of mobile phone is more and more higher, and mobile phone has become out and out multimedia information dissemination carrier, for more prompt people's work and life providing and information service easily.People no longer are satisfied with in call function and the appearance design the demand of mobile phone, and increasing new function is expected by people, and the development of lcd technology just also makes the mobile phone screen be transformed to colour gradually by black and white.

Mobile phone screen by black and white gradually in this process that colour transforms, CSTN shields the liquid crystal display that mobile phone just is most widely used.Some intrinsic informations of mobile phone generally provide a zone alone such as signal power, battery electric quantity size or the like and show above mobile phone screen, claim these information to be shown as icon (ICON) usually and show.See also Fig. 1, Figure 1 shows that now basic mobile phone display screen shows general layout, the relevant information prompting of the mobile phone that ICON partly shows, present CSTN generally is integrated into ICON in the AB district and shows with image pixel, has taken many relatively screens.The ICON of now general mobile phone CSTN screen is generally integrated by graphical pixel, because the general variation of ICON is little, the dram space of LCD has been wasted in this demonstration greatly.In the replacement process of mobile phone screen, relatively large simultaneously to the change of the whole mainboard of old mobile phone.

[summary of the invention]

The utility model proposes simple, the cost-effective CSTN LCDs of a kind of control at the above deficiency of prior art.

A kind of CSTN LCDs comprises ITO electro-conductive glass, following ITO electro-conductive glass, is located in the stn liquid crystal layer between the two, and etching has the SEG line on the described upward ITO electro-conductive glass, and etching has the COM line on the described ITO electro-conductive glass down; Go back etching on the described upward ITO electro-conductive glass icon is arranged.

Above-mentioned CSTN LCDs, each described icon one end is connected with a SEG line, and the other end is connected with described COM line.Described icon all is connected with same COM line.

Above-mentioned CSTN LCDs also comprises monochromatic film, is attached at described ITO conductive glass surface down, and is positioned under the viewing area of described icon.

The utility model LCDs is utilized nesa coating, make the electrode of given shape through etching, after electro-conductive glass was made liquid crystal cell up and down, the ICON that shows was exactly the pattern that is directly formed by battery lead plate on screen, rather than the figure that is combined by pixel; Therefore, there is not pixel in the ICON figure and need not takies dram space, has realized bigger viewing area.Simultaneously, ICON is generally monochromatic, so can use monochromatic film or need not color film in the ICON zone, the saving cost.Such display mode, owing to only need carry out gating to the SEG line, it is easier to make that control realizes.

[description of drawings]

Fig. 1 is the icon and the colour display screen part subregion synoptic diagram of prior art display screen.

Fig. 2 is the LCDs one-piece construction synoptic diagram of the utility model embodiment.

Fig. 3 is the SEG cabling of the utility model LCD chromium plate.

Fig. 4 is the COM cabling of the utility model LCD chromium plate.

Fig. 5 is the utility model total system realization flow figure.

Fig. 6 is the LCDs one-piece construction synoptic diagram of the utility model embodiment two.

[embodiment]

The utility model is described in further detail below in conjunction with accompanying drawing.

Please refer to shown in Figure 2, the structure of a kind of CSTN LCDs of the present utility model,, comprise from top to bottom toward outside light source direction from backlight: go up polaroid 10, top glass substrate 20, go up nesa coating 30, liquid crystal 40, nesa coating 50, insulation course 60, color film 70 and monochromatic film 71, reflectance coating 80, lower glass substrate 90 and following polaroid 100 down.Seal with envelope frame glue 110 around the liquid crystal 40.

See also Fig. 3, Fig. 4, in non-ICON zone, the cabling of SEG electrode and the cabling of prior art are as good as.In the ICON zone, the SEG line on the ITO electro-conductive glass is etched into the icon that mobile phone is used always, forms display pattern.Therefore, as SEG, COM line simultaneously during gating, the ICON pattern on the chromium plate just shows on shielding.

Wherein, because each pixel of CSTN is made up of three sub-pixs, so each pixel has 3 SEG line traffic controls, control R respectively, G, B three former light.Owing to now ICON is not generally required its colorful demonstration, consider the cost of color film simultaneously, can color film in the ICON zone, directly replace with monochromatic film 71.So plot the SEG line of ICON pattern, always three select one here, this example is selected the R line.

Aspect the control of drive IC,, can adopt the dual area display mode in order to save power consumption, in the ICON zone, what ICON showed all is the daily information of mobile phone, such as indication incoming call, note, amount of batteries how much, show that current phone is provided with or the like, only when incoming call, when coming note or amount of batteries change or change when being provided with etc. to change and show, other mosts of the time show constant, so can be in the idle state.

Aspect software, write the selection attitude that realizes ICON with full FF, write the non-state selection of realizing ICON with complete 00.The institute so that program simplify greatly.

Referring to Fig. 5, provided global design flow process of the present utility model, wherein emphasis is the design of LCD chromium plate.Procedure for displaying after the utility model relates to the whole design process of a CSTN basically and organizes mobile phone.By the transition trend of black and white, merged the global advantage of TN, STN and CSTN according to present mobile phone, proposed a kind of new display mode of color screen CSTN demonstration ICON to colour.

Embodiment two

Please refer to shown in Figure 6, difference with last example, the structure of the CSTN LCDs that this is routine,, comprise from top to bottom toward outside light source direction from backlight: go up polaroid 10, top glass substrate 20, go up nesa coating 30, liquid crystal 40, nesa coating 50, insulation course 60, color film 70 and monochromatic film 71, lower glass substrate 90 and following polaroid 100 down.This example belongs to the CSTN LCDs of full-transparency type, does not therefore have the reflection horizon.

Claims

1. a CSTN LCDs comprises ITO electro-conductive glass, following ITO electro-conductive glass, is located in the stn liquid crystal layer between the two, and etching has the SEG line on the described upward ITO electro-conductive glass, and etching has the COM line on the described ITO electro-conductive glass down; It is characterized in that: going back etching on the described upward ITO electro-conductive glass has icon.

2. CSTN LCDs as claimed in claim 1 is characterized in that: each described icon one end is connected with a SEG line, and the other end is connected with described COM line.

3. CSTN LCDs as claimed in claim 2 is characterized in that: described icon all is connected with same COM line.

4. as each described CSTN LCDs among the claim 1-3, it is characterized in that: also comprise monochromatic film, be attached at described ITO conductive glass surface down, and be positioned under the viewing area of described icon.