CN200959057Y

CN200959057Y - Liquid-crystal display module with light-negative recovery characteristics

Info

Publication number: CN200959057Y
Application number: CN 200620122275
Authority: CN
Inventors: 陈俊豪
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2007-10-10
Anticipated expiration: 2016-07-18

Abstract

The utility model relates to a back light recycling liquid crystal module comprising a light filter substrate, a grid array substrate and a back light source, wherein the grid array substrate consists of a thin film transistor driver module and at least one solar battery. The solar battery which is arranged in the non active arrears of the gird array substrate and electrically connected with the thin film transistor driver module, is irradiated with light from the back light source to enable the solar battery to provide high pressure to the thin film transistor driver module thereby turn the solar battery to a stable voltage source, so that the solar battery supply the thin film transistor driver module or recharge the battery to achieve a favorable energy operating factor.

Description

LCD MODULE with recovery characteristic backlight

Technical field

The utility model relates to a kind of LCD MODULE, has solar cell to reclaim LCD MODULE design backlight about a kind of especially.

Background technology

Present general solar cell (solar cell) technology is with thin film transistor (TFT) (the thin film transistor of active matrix display panel (AM LCD); TFT) technology has a lot of approximate part, for example all utilize polysilicon or amorphous silicon material, and with glass is that base material carries out SEMICONDUCTING THIN FILM TECHNOLOGY, therefore, solar cell is integrated in a LCD MODULE, is suggested with the design that reaches energy-saving effect, and in this known design, solar cell receives context light and carries out opto-electronic conversion, to produce electric energy.

Yet, with the light source of surround lighting, not only be subject to environmental change influence and unstable, and brightness also is restricted as solar cell, thus be difficult to further promote energy utilization rate, and the solar cell purposes that is installed in the LCD MODULE is limited to.

Summary of the invention

Therefore, the purpose of this utility model is providing a kind of LCD MODULE with recovery characteristic backlight, it can utilize the solar cell of LCD MODULE that makes backlight to produce the high pressure that the thin film transistor (TFT) driver module is provided, to improve energy utilization rate, simplify the circuit structure of thin film transistor (TFT) driver module simultaneously.

According to design of the present utility model, a kind of LCD MODULE with recovery characteristic backlight comprises a filter sheet base plate; Array basal plate, this array base palte is parallel to this filter sheet base plate, and be provided with a thin film transistor (TFT) driver module (TFT drive circuitry) and at least one solar cell (solar cell), this solar cell is arranged at the non-display area (non-active areas) of this array base palte, and electrically connects this thin film transistor (TFT) driver module; One liquid crystal layer, this liquid crystal layer are located between this filter sheet base plate and this array base palte; Reach one the backlight of light in this solar cell is provided, this backlight is arranged at the side that this array base palte differs from this filter sheet base plate.

By design of the present utility model, the light that comes from non-display area backlight, but direct irradiation solar cell, make solar cell (solar cell) produce the high pressure that directly offers grid drive chip, and can omit for example outer power supply potential source of power chip, be built in the booster circuit of source driving chip in reaching originally, so not only can save the cost of those circuit members, can therefore reduce the assembly distributed areas simultaneously to promote aperture opening ratio, and it is backlight that LCD MODULE of the present utility model utilizes solar cell to reclaim, because of backlight stable not affected by environment and brightness is high, so solar cell can become stable voltage source, to supply with the thin film transistor (TFT) driver module or to recharge battery, obtain good energy utilization rate.

Description of drawings

Fig. 1 is a synoptic diagram, shows an embodiment of the utility model LCD MODULE.

Fig. 2 is a synoptic diagram, shows another embodiment of the utility model LCD MODULE.

Fig. 3 is a synoptic diagram, shows another embodiment of the utility model LCD MODULE.

Fig. 4 is applied to the practical circuit diagram as the multilayer film grid glass of Fig. 3 for showing the utility model.

Symbol description:

10,30,50 LCD MODULE

11,31,51 array base paltes

12,32,52 solar cells

13,33,53 filter sheet base plates

14 thin film transistor (TFT) driver modules

16,66 glass substrates

18 grid drive chip

22,56 source driving chips

24,42,58 interconnection lines

26,36,62 backlights

28,38,64 light guide plate

34 single chip for driving

54 multilayer film grid glass

72 first circuit

74 second circuits

76 grid bus bars

I is invalid backlight

The N1-N5 transistor

Embodiment

Fig. 1 is a synoptic diagram, shows an embodiment of the utility model LCD MODULE.As shown in Figure 1, LCD MODULE 10 of the present utility model is that a solar cell (solar cell) 12 and thin film transistor (TFT) driver module (thin film transistor drive circuitry) 14 are integrated on the same glass substrate 16 to constitute array basal plate (array substrate) 11, and array base palte 11 offsides are provided with a filter sheet base plate 13, and folder is established a liquid crystal layer and can be constituted a liquid crystal cells between the two.According to present embodiment, driver module 14 comprises a grid drive chip (gate driver IC) 18 and one source pole chip for driving (source driver IC) 22, solar cell 12 is positioned at this array base palte 11 towards a side of liquid crystal layer and be arranged at the non-display area (non-active areas) at array base palte 11 edges, and connect grid drive chip 18 and source driving chip 22 respectively via metal interconnecting wires 24, backlight 26 is provided with that array base palte 11 differs from a side of filter sheet base plate 13 and towards solar cell 12, after light guide plate 28 diffusions of the light part that backlight 26 sends via adjacency, derive the viewing area (activeareas) that penetrates LCD MODULE 10, another part in light (invalid backlight) I of non-display area directly into the sensitive area that is incident upon solar cell 12, because of solar cell 12 is electrically connected grid chip for driving 18 and source driving chip 22, after invalid I backlight is converted to electric energy via the opto-electronic conversion effect of solar cell 12, can supplies voltage and give grid drive chip 18 and source driving chip 22.

In the driver module of known hand-held LCD, the pressure value of about 2V-3.3V is provided by an external power chip (power IC) usually, relend by the built-in booster circuit of source driving chip (booster circuit) and carry high-voltage value, required high voltage when supplying with the grid drive chip running; Otherwise, the utility model can be with one or more solar cells (solar cell) 12 of serial connection each other, behind backlight illumination, directly produce a high voltage, and offer grid drive chip 18, so can omit the booster circuit that is built in source driving chip 22 in original; On the other hand, solar cell (solar cell) 12 also utilizes interconnection line 24 to link simultaneously provides shared voltage (Vcom) value to give source driving chip 22.

Therefore, by design of the present utility model, utilize solar cell (solar cell) 12 to be connected in series out different magnitudes of voltage, high-pressure section can directly offer grid drive chip 22, and can save power chip for example outer power supply potential source and original in be built in the booster circuit of source driving chip, so not only can save the cost of those circuit members, can therefore reduce the assembly distributed areas simultaneously to promote aperture opening ratio, moreover, it is backlight that LCD MODULE 10 of the present utility model utilizes solar cell 12 to reclaim, because of backlight stable not affected by environment and brightness is higher, so solar cell 12 can become stable voltage source, to supply with driver module 14 or to recharge battery, obtain good energy utilization rate.

Fig. 2 is a synoptic diagram, shows another embodiment of the utility model LCD MODULE.As shown in Figure 2, in this LCD MODULE 30, array base palte 31 is established liquid crystal layer with filter sheet base plate 33 folders and is constituted a liquid crystal cells, and gate drivers and source electrode driver can be integrated in a single chip for driving (single driver IC) 34, the solar cell 32 that is positioned at backlight 36 offsides is arranged at the non-display area at LCD MODULE 30 edges, and connects this single chip for driving 34 via interconnection line 42; When backlight 36 does not enter the light direct irradiation solar cell 32 of light guide plate 38, can utilize solar cell 32 to be connected in series out different magnitudes of voltage, that is solar cell 32 itself can constitute a transformer (transformer), and its high-pressure section via the gate input feed-in of chip for driving 34 wherein so can omit the booster circuit that is built in this single chip for driving 34 in original need equally.

Fig. 3 is a synoptic diagram, shows another embodiment of the utility model LCD MODULE.As shown in Figure 3, in this

LCD MODULE

50,53 folders of array base palte 51 and filter sheet base plate are established the liquid crystal layer (not shown), to constitute a liquid crystal cells, and polysilicon (poly-Si) or amorphous silicon (a-Si) the multilayer film grid glass (gate onglass) 54 that film constituted of gate drivers on glass substrate 66, growing up, solar cell 52 is connected to this multilayer film grid glass 54 and one source pole chip for driving 56 respectively via interconnection line 58, do not enter the light of light guide plate 64 when backlight 62, and during direct irradiation solar cell 52, the high pressure of solar cell 52 can directly be imported multilayer film grid glass 54, provide a shared voltage (Vcom) to give source driving chip 56 simultaneously, so can omit the booster circuit that is built in source driving chip 56 in original need equally.

Fig. 4 is applied to the practical circuit diagram as the multilayer film grid glass of Fig. 3 for showing the utility model.As shown in Figure 4, the gate drivers that is made of multilayer film grid glass 54 is illustrated as and comprises one first circuit 72, a second circuit 74, and five transistor N1-N5, because of the circuit structure of this gate drivers is a technique known, so will not describe in detail in this.The anode of solar cell 52 of the present utility model (single solar cell or a plurality of solar cell of serial connection each other) connects the drain electrode of nmos pass transistor N1 and nmos pass transistor N4, so that the first voltage source V dd to be provided, the negative terminal of solar cell 52 connects the source electrode of nmos pass transistor N5, so that the second voltage source V ss to be provided, the output voltage V out driving grid bus bar 76 of second circuit 74 outputs, and offer the next stage circuit and use, because of can directly providing high pressure, solar cell 52 of the present utility model gives gate drivers (multilayer film grid glass 54), so can omit the required booster circuit of known design.

The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present utility model and category, and, all should be contained in the claim, but not be defined in the above embodiments its equivalent modifications of carrying out or change.

Claims

1. the LCD MODULE with recovery characteristic backlight is characterized in that, comprises:

One filter sheet base plate;

Array basal plate, this array base palte is parallel to this filter sheet base plate, and is provided with a thin film transistor (TFT) driver module and at least one solar cell, and this solar cell is arranged at the non-display area of this array base palte, and electrically connects this thin film transistor (TFT) driver module;

One liquid crystal layer, this liquid crystal layer are located between this filter sheet base plate and this array base palte; And

One provides the backlight of light in this solar cell, and this backlight is arranged at the side that this array base palte differs from this filter sheet base plate.

2. the LCD MODULE with recovery characteristic backlight as claimed in claim 1, it is characterized in that, this thin film transistor (TFT) driver module comprises a grid drive chip and one source pole chip for driving, and this solar cell is electrically connected this grid drive chip and this source driving chip respectively.

3. the LCD MODULE with recovery characteristic backlight as claimed in claim 1, it is characterized in that, this thin film transistor (TFT) driver module comprises one and has the single chip for driving of gate drivers and source electrode driver simultaneously, and this solar cell is electrically connected the gate input of this single chip for driving.

4. the LCD MODULE with recovery characteristic backlight as claimed in claim 1, it is characterized in that, this thin film transistor (TFT) drives module and comprises multilayer film grid glass and one source pole chip for driving, and this solar cell is electrically connected this multilayer film grid glass and this source driving chip respectively.

5. the LCD MODULE with recovery characteristic backlight as claimed in claim 4 is characterized in that, this multilayer film grid glass is made of polysilicon or amorphous silicon membrane.

6. the LCD MODULE with recovery characteristic backlight as claimed in claim 1 is characterized in that, this solar cell and this thin film transistor (TFT) driver module are formed on the same glass substrate.

7. the LCD MODULE with recovery characteristic backlight as claimed in claim 1 is characterized in that, this solar cell is the fringe region that is arranged at this LCD MODULE.

8. the LCD MODULE with recovery characteristic backlight as claimed in claim 1 is characterized in that, this solar cell is positioned at the side of this array base palte towards this liquid crystal layer.

9. the LCD MODULE with recovery characteristic backlight as claimed in claim 1 is characterized in that, is provided with a light guide plate in abutting connection with this backlight, and this light guide plate is positioned at the side that this array base palte differs from this filter sheet base plate.