CN2562207Y - Back cover for promoting effiicency of light tube - Google Patents
Back cover for promoting effiicency of light tube Download PDFInfo
- Publication number
- CN2562207Y CN2562207Y CN 02241609 CN02241609U CN2562207Y CN 2562207 Y CN2562207 Y CN 2562207Y CN 02241609 CN02241609 CN 02241609 CN 02241609 U CN02241609 U CN 02241609U CN 2562207 Y CN2562207 Y CN 2562207Y
- Authority
- CN
- China
- Prior art keywords
- body lid
- fluorescent tube
- light
- lid arrangement
- usefulness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The utility model relates to a back cover device which can improve the efficiency of a light pipe and is used for a passive type display; wherein, the passive type display is provided with at least one light source used for providing the light needed by the display operation of the passive type display. The back cover device in the utility model comprises a first reflection material, a back cover and light pipe cover and a guide light board; wherein, the reflection material is used for reflecting the light emitting from at least the light source. The back cover and light pipe cover is fixedly connected with the back surface of the passive type display and is used for positioning and coating at least the light source; furthermore, the back cover and light pipe cover is provided with a first inner surface part used for providing the first reflection material on the back cover and light pipe cover. The guide light board is used for guiding the light emitted from the light source.
Description
(1) technical field
The utility model refers to the back of the body lid arrangement of a kind of passive-type display (passive display) especially about a kind of back of the body lid arrangement.
(2) background technology
Along with being showing improvement or progress day by day of manufacturing technology, passive-type display (passive display) is subjected to consumer favor gradually and becomes main flow on the market gradually.Especially LCD (Liquid crystal displayLCD) (for example film liquid crystal display TFT-LCD) has been a kind of passive-type display device that is widely used.The principle of work of LCD mainly is to utilize electric field to change the ordered state of liquid crystal, makes the light that passes through liquid crystal produce the phenomenon that circuit changes, and then reaches the display effect that light and shade changes.
See also Fig. 1, it is an element circuit block schematic diagram of a Thin Film Transistor-LCD (TFT-LCD), and wherein thin film transistor (TFT) 11 is to be subjected to the control of sweep trace voltage Vs and to switch between conducting state and closed condition.Data line voltage Vd then is added to when thin film transistor (TFT) 11 is in conducting state between the pixel electrode 131, common electrode 132 of liquid crystal 12 both sides, in order to change the ordered state of this liquid crystal 12, and then control the printing opacity degree of this liquid crystal 12, the intensity that the light that makes back side light source 14 be sent arrives in beholder's eye changes, in order to obtaining the display effect that light and shade changes, storage capacitors 15 is then in order to the characteristic of reinforcing element.
As shown in the above description, the pixel of LCD itself and can't be luminous, and the light that is sent to the beholder is sent by back side light source fully, so the picture quality of LCD and brightness are influenced by the usefulness of back side light source also.
See also Fig. 2, it is to commonly use the back of the body lid arrangement of LCD and the organigram that internal light source is provided with.Traditional liquid crystal display device structure comprises as shown in Figure 2: a display pannel (not shown), a light guide plate 21, one first reflectivity material 22, a back of the body cover 23, one lamp tube covers 24, one second reflectivity material 25 and fluorescent tube 26 etc.Wherein, this light guide plate 21 is in order to guiding this light that fluorescent tube 26 is launched, and this first reflectivity material 22 be keep flat be arranged at the back of the body cover 23 and light guide plate 21 between, in order to reflect light that fluorescent tube 26 sent to panel of LCD.In addition, this back of the body lid 23 matches with this display pannel to provide an inner space with ccontaining and fix these fluorescent tubes 26 in it.And this second reflectivity material 25 is to be arranged on the inside surface of this lamp tube cover 24, be in order to the light that sent of reflection fluorescent tube 26 to light guide plate 21, and light is reflexed to panel of LCD by the effect of the first reflectivity material 22.Yet general fluorescent tube can produce high heat when luminous, and Gao Re can have influence on the brightness of fluorescent tube.Because the area of lamp tube cover is less, heat radiation is difficult for, therefore, if use 26 its temperature effects of many more fluorescent tubes will make the usefulness (that is brightness) of fluorescent tube reduce.Though, also have in the known techniques lamp tube cover in the described known techniques of Fig. 2 24 and second reflective substance 25 of using special substance are combined into one, or directly lamp tube cover 24 is done the surface and handled obtaining bigger reflectivity, yet the manufacturing cost of this kind mode is very high and impracticable.In addition, employed back of the body lid 23 generally mostly is plastic cement backboard or aluminium sheet in the known techniques, contacts but only have slightly with lamp tube cover 24, and therefore heat radiation is difficult for consequently influencing fluorescent tube usefulness.Like this, overcome this shortcoming and propose a form that is different from now, and more be applicable to a back of the body lid arrangement of LCD with regard to needs.
(3) utility model content
Fundamental purpose of the present utility model can and not increase under the condition of cost in the fluorescent tube that uses fixed qty for a kind of back of the body lid arrangement of Thin Film Transistor-LCD is provided, and increases its brightness, and promotes fluorescent tube usefulness.
Of the present utility modelly provide a kind of back of the body lid arrangement that promotes fluorescent tube usefulness, to be applied to a passive-type display; Wherein, this passive-type display has at least one illuminating source, is arranged at the back side of this passive-type display, required light when providing this passive-type display to carry out display action; This back of the body lid arrangement that can promote fluorescent tube usefulness comprises: one first reflectivity material, in order to reflect this light that this at least one illuminating source is launched; One back of the body lid lamp tube cover of holding concurrently is fixedly attached to the back side of this passive-type display, in order to should at least one illuminating source location and coating wherein, and it has one first inner surface portion, can be in order to this first reflectivity material to be set thereon; And a light guide plate, in order to guide the light that this at least one illuminating source sends.
According to conception of the present utility model, wherein this passive-type display is a LCD.
According to conception of the present utility model, wherein this LCD is a film liquid crystal display.
According to conception of the present utility model, wherein this illuminating source is a fluorescent tube.
According to conception of the present utility model, wherein this fluorescent tube is the cold cathode fluorescent lamp pipe.
According to conception of the present utility model, wherein the double lamp tube cover of this back of the body lid is made up of a heat-conducting.
According to conception of the present utility model, wherein this heat-conducting is the material of aluminium or copper or high-cooling property.
According to conception of the present utility model, wherein this first reflectivity material is to stick in this first inner surface portion that this back of the body lid is held concurrently lamp tube cover or is combined as a whole with lamp tube cover.
According to conception of the present utility model, this back of the body lid arrangement also comprises one second reflectivity material, is arranged at one second inner surface portion of the double lamp tube cover of this back of the body lid, in order to reflect this light that this at least one illuminating source is launched.
According to conception of the present utility model, wherein this second reflectivity material is this second inner surface portion that sticks in the double lamp tube cover of this back of the body lid.
According to conception of the present utility model, wherein this second reflectivity material is to combine with this first reflectivity material.
For further specifying the purpose of this utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the element circuit block schematic diagram for a Thin Film Transistor-LCD.
Fig. 2 is the organigram for the back of the body lid arrangement of commonly using LCD and internal light source setting.
Fig. 3 is the organigram for the back of the body lid arrangement of the LCD of the utility model one preferred embodiment and internal light source setting.
(5) embodiment
See also Fig. 3, it is the organigram for the back of the body lid arrangement of the LCD of the utility model one preferred embodiment and internal light source setting.As shown in Figure 3, liquid crystal display device structure of the present utility model comprises: a display pannel (not shown), a light guide plate 31, one first reflectivity material 32, the double lampshade 33 of a back of the body lid, one second reflectivity material 34 and fluorescent tube 35 (with cold cathode fluorescent lamp Guan Weijia) etc.Wherein, this light guide plate 31 is in order to guiding this light that fluorescent tube 35 is launched, and this first reflectivity material 32 is to be arranged at this back of the body lid first inner surface portion of lamp tube cover 33 of holding concurrently, can be in order to reflect light that this fluorescent tube 35 sent to panel of LCD.In addition, this back of the body lid hold concurrently lamp tube cover 33 be match with this display pannel with provide an inner space with ccontaining with fix these fluorescent tubes 35 in it.And this second reflectivity material 34 is to be arranged at this back of the body lid second inner surface portion of lamp tube cover 33 of holding concurrently, and the light that can be sent in order to reflectoscope pipe 35 is to panel of LCD.In said structure, be one for asking bigger area of dissipation thereby the lid of the back of the body in the known techniques shown in Figure 2 being combined with lamp tube cover, so not only can increase radiating efficiency and promote fluorescent tube usefulness, and more can reduce cost.In addition, the hold concurrently material of lamp tube cover 33 of back of the body lid can be used heat conduction good metal material for example aluminium or copper, and this first also can stick in this back of the body respectively with this second reflectivity material 32 and 34 and cover first inside surface and second inner surface portion of double lamp tube cover or both are combined into one.
In sum as can be known, the back side of the present utility model back of the body lid arrangement can increase area of dissipation owing to be in conjunction with back of the body lid and lamp tube cover, and then promotes fluorescent tube efficient, the value of real tool industry.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.
Claims (11)
1. back of the body lid arrangement that can promote fluorescent tube usefulness, be applied to a passive-type display, wherein this passive-type display has at least one illuminating source, required light when providing this passive-type display to carry out display action, it is characterized in that this back of the body lid arrangement comprises:
One first reflectivity material is in order to reflect this light that this at least one illuminating source is launched;
One back of the body lid lamp tube cover of holding concurrently is fixedly attached to the back side of this passive-type display, in order to should at least one illuminating source location and coating wherein, and it has one first inner surface portion, can be in order to this first counter establishing property material to be set thereon; And
One light guide plate is in order to guide the light that this at least one illuminating source sends.
2. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that this passive-type display is a LCD.
3. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 2 is characterized in that this LCD is a film liquid crystal display.
4. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that this illuminating source is a fluorescent tube.
5. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 4 is characterized in that, this fluorescent tube is to be the cold cathode fluorescent lamp pipe.
6. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that, the double lamp tube cover of this back of the body lid is made up of a heat-conducting.
7. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that this heat-conducting is aluminium or copper.
8. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that, this first reflectivity material is this first inner surface portion that sticks in the double lamp tube cover of this back of the body lid.
9. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 1 is characterized in that, also comprises one second reflectivity material, is arranged at one second inner surface portion of the double lamp tube cover of this back of the body lid, in order to reflect this light that this at least one illuminating source is launched.
10. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 9 is characterized in that, this second reflectivity material is this second inner surface portion that sticks in the double lamp tube cover of this back of the body lid.
11. the back of the body lid arrangement that promotes fluorescent tube usefulness as claimed in claim 9 is characterized in that, this second reflectivity material is to combine with this first reflectivity material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241609 CN2562207Y (en) | 2002-07-01 | 2002-07-01 | Back cover for promoting effiicency of light tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02241609 CN2562207Y (en) | 2002-07-01 | 2002-07-01 | Back cover for promoting effiicency of light tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2562207Y true CN2562207Y (en) | 2003-07-23 |
Family
ID=33714440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02241609 Expired - Lifetime CN2562207Y (en) | 2002-07-01 | 2002-07-01 | Back cover for promoting effiicency of light tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2562207Y (en) |
-
2002
- 2002-07-01 CN CN 02241609 patent/CN2562207Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120701 Granted publication date: 20030723 |