CN102044224A - Long-life display - Google Patents
Long-life display Download PDFInfo
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- CN102044224A CN102044224A CN2009102070722A CN200910207072A CN102044224A CN 102044224 A CN102044224 A CN 102044224A CN 2009102070722 A CN2009102070722 A CN 2009102070722A CN 200910207072 A CN200910207072 A CN 200910207072A CN 102044224 A CN102044224 A CN 102044224A
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- backlight
- cathode fluorescence
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Abstract
The invention discloses a long-life display comprising a backlight generating unit and a timing light intensity control unit, wherein the backlight generating unit is used for generating backlight on a liquid level panel of the display; and the timing light intensity control unit is connected with the backlight generating unit and is used for counting working time of the display in real time and automatically increasing the work current of the backlight generating unit to increase the brightness of the display when the presetting work time of the display is reached. Light decay caused by the use of the liquid crystal panel for a long period is compensated by increasing the backlight brightness of the liquid crystal panel, thus the service life of the liquid crystal panel is prolonged, the integral service life of the liquid crystal display is further prolonged, economic benefits of display users are ensured, the living needs of people is better met and the product use feel of the display users is greatly improved, and important productive practice significance is obtained.
Description
Technical field
The present invention relates to the image display technology field, particularly relate to a kind of long-life display.
Background technology
Continuous development along with China's science and technology, domestic electric appliances such as televisor, video camera, camera, monitor and computer are more and more universal in people's daily life, people often use computer to understand the information of outside and learn, and computer has become people's indispensable ingredient of living.
Along with the quickening of social modernization's process, people's life has also incorporated more new technology.Requirement to properties of product is also more and more higher, at present general LCD uses back brightness meeting to descend significantly long-time, make troubles to user's use, especially in Internet bar and monitor use, the working time is generally normal twice in one day, the long-time use of cause can cause the decline significantly of display brightness, and this main cause is that liquid crystal panel backlight brightness reduction causes.Because the brightness of display liquid crystal panel backlight reduces, thereby cause the decline significantly of display brightness, make the lost of life of display, change too fastly, finally cause the waste of resource, grievous injury the economic interests of display user.
Therefore, press at present and develop a kind of long-life display, it has long serviceable life, can increase substantially the service time of display, guarantees the economic interests of display user, satisfies the needs of people's life better.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of long-life display, can promote the serviceable life of liquid crystal panel by the brightness that improves liquid crystal panel backlight, and then the whole service life of raising LCD, guarantee the economic interests of display user, satisfy the needs of people's life better, strengthen the product use experience of display user greatly, be of great practical significance.
For this reason, the invention provides a kind of long-life display, include generation unit backlight and timing light intensity control module, wherein:
Generation unit backlight is used for sending on the liquid level panel of display backlight;
Regularly brightness control unit is connected with generation unit backlight, is used for the working time of real-time statistics display, when arriving default working time of display, improves the working current of generation unit backlight automatically, the brightness that realizes improving display.
Preferably, described generation unit backlight is a cold-cathode fluorescence lamp, include glass lamp 3, described glass lamp 3 two ends are respectively arranged with an electrode 1, described glass lamp 3 inwalls scribble fluorescent powder 2, and each described electrode 1 head has electrode terminal 10, and the tail end of described electrode 1 has pole cup 11, described pole cup 11 is positioned at inside, described glass lamp 3 two ends, and the inside surface of described pole cup 11 applies the oxide of caesium.
Preferably, the oxide of described caesium is evenly coated in the inside surface of described pole cup 11.
Preferably, the width of described pole cup 11 is 1.45～3.0mm, and length is 6～30mm.
Preferably, the mean grain size of described fluorescent powder 2 is 4.7 microns～5 microns.
Preferably, described fluorescent powder 2 is for adopting the three primary colors fluorescent powder of nanometer coating.
Preferably, the working current of described cold-cathode fluorescence lamp is 4mA～6.8mA.
Preferably, described glass lamp 3 inside are full of the argon neon mixture body are arranged, and the argon gas ratio in the described glass lamp 3 is 5%-20%.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of long-life display, can compensate by the brightness that improves liquid crystal panel backlight because the long-time light decay that causes that uses of liquid crystal panel, promote the serviceable life of liquid crystal panel, and then the whole service life of raising LCD, guarantee the economic interests of display user, satisfy the needs of people's life better, strengthen the product use experience of display user greatly, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of a kind of long-life display provided by the invention;
Fig. 2 is the structural representation of a kind of long-life energy-saving cold-cathode fluorescence lamp provided by the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the structural representation of a kind of long-life display provided by the invention.
Referring to Fig. 1, the invention provides a kind of long-life display, this display includes generation unit 101 backlight and timing light intensity control module 102, wherein:
Regularly brightness control unit 102 is connected with generation unit 101 backlight, is used for the working time of real-time statistics display, when arriving default working time of display, improves the working current of generation unit 101 backlight automatically, the brightness that realizes improving display.
Need to prove, the brightness of display is presented as the brightness of liquid crystal panel, and the brightness of liquid crystal panel depends primarily on the brightness of generation unit backlight in the liquid crystal panel, be specially the brightness of depending on fluorescent tube in the liquid crystal panel, therefore, behind long-time use display, when arriving default working time of display, the brightness that timing brightness control unit 102 can improve liquid crystal panel backlight by the working current that improves generation unit backlight (as the CCFL fluorescent tube) automatically, thereby compensation is because the long-time light decay that causes that uses of liquid crystal panel, the final brightness that realizes improving display, thereby can guarantee that display still can work long hours more than the normal brightness of needs, have long serviceable life, can increase substantially the service time of display.
In the present invention, on the specific implementation, the running current of described generation unit 101 backlight is lower than the running current of display, has the space of lifting so can guarantee the working current of fluorescent tube.
Need to prove, the default working time of described display can be set in advance by the user, for example, can be set at 20,000 hours, thereby display is when work is reach 20,000 hours, regularly brightness control unit 102 improves the working current of generation unit 101 backlight automatically, thereby improve the brightness of generation unit 101 backlight, realize the raising of liquid level panel luminance, compensation is because the long-time light decay that causes that uses of liquid crystal panel, the final brightness that realizes improving display guarantees that display still can normally use, thereby prolongs the serviceable life of display.
In the present invention, on the specific implementation, described generation unit 101 backlight is cold-cathode fluorescence lamp (CCFL);
Referring to Fig. 2, the cold-cathode fluorescence lamp that the present invention adopts includes glass lamp 3, and described glass lamp 3 two ends are respectively arranged with an electrode 1, and described glass lamp 3 inwalls scribble fluorescent powder 2;
In the present invention, described glass lamp 3 inside are full of the argon neon mixture body are arranged.Need illustrate, for example in 19 cun existing cold-cathode fluorescence lamp, existing argon gas composition generally is 1%～4%, argon gas ratio in the glass lamp 3 of the present invention can be brought up to 5%-20%, be preferably and bring up to 5%, can stablize the running current of fluorescent tube so that the emitting electrons of electrode is more stable like this, thereby prolonged the life-span of electrode, promoted the raising of display whole service life simultaneously.
In the present invention, the internal diameter size of described glass lamp 3 is 1.5～1.99mm, and existing glass lamp internal diameter is 2.00mm.The present invention is by reducing the glass lamp internal diameter, reduce the propagation distance of light in glass lamp, reduce owing to the attenuation of the argon neon mixture body of being filled light, thereby promoted the brightness of cold-cathode fluorescence lamp, so under equal brightness situation, can reduce the required working current of cold-cathode fluorescence lamp, the minimizing of working current can reduce the attenuation amplitude of electrode and fluorescent powder, thereby prolongs the serviceable life of whole cold-cathode fluorescence lamp.
In the present invention, as shown in Figure 1, each described electrode 1 head has electrode terminal 10, and the tail end of described electrode 1 has pole cup 11, and described pole cup 11 is positioned at inside, described glass lamp 3 two ends; The width of described pole cup 11 can be 1.45～3.0mm, width is preferably 1.6～1.7mm, length can be 6～30mm, length is preferably and adopts 6～10mm, has increased by one times of distance than the length 3～5mm of existing pole cup, so the surface area of pole cup of the present invention 11 is improved, thereby the electron ion of pole cup 11 more anti-glass lamps 3 inside bombardment, effectively suppress the electrode sputter, compression resistance is stronger, has improved electrode life; In addition,, make electronics increase, increased speed, make electronics and mercury Hg atomic excitation produce the light of 253.7nm, the ability of light-emitting phosphor is improved in the quantity of pole cup 11 the insides owing to increased the length of pole cup 11; And compare with traditional electrode, reduced the probability of electrode and cathode fluorescent tube end fluorescent powder effect on every side, reduce the melanism that the fluorescent powder owing to electron pair cathode fluorescent tube end reacts and causes, thereby reduced the aging of fluorescent powder, improved the serviceable life of fluorescent powder, further improve the serviceable life of cold-cathode fluorescence lamp, promoted the raising of display whole service life.
In the present invention, the pole cup 11 of described electrode 1 tail end can be the nickel cup, the oxide of the inside surface metallizing caesium of described pole cup 11, make pole cup 11 as emissive material like this, because the inside surface emitting electrons of the oxide active electrode cup 11 of metal caesium is arranged, work function is lower, the electricity that reduces negative electrode falls, make easier the launching of electronics of pole cup 11, thereby can reduce the black dull start-up time of cold-cathode fluorescence lamp, effectively avoided the electrode melanism;
In the present invention, the oxide of metal caesium is evenly coated in the inside surface of described pole cup 11, owing to send electronics in the pole cup, oxide (for example can be cesium oxide) by this metal caesium of even coating, can improve the effective surface area of pole cup internal emission electronics effectively, make that electrons excited quantity increases in the pole cup, cause more electronics to eject and have an effect with the fluorescent powder pole cup 11 outside from pole cup 11, thus the brightness of raising cold-cathode fluorescence lamp.
Need to prove, after the length of lengthening pole cup 11, if the oxide-coated of metal caesium is inhomogeneous, uncoated part can not be stablized excitation electron in the pole cup 11 so, cause the effective surface area of pole cup internal emission electronics to reduce, thereby make the electron amount that ejects in the pole cup reduce, thereby reduce, reduced the brightness of cold-cathode fluorescence lamp with quantity that the outer fluorescent powder of pole cup is had an effect.If the inside surface at pole cup 11 is not coated with the oxide that is covered with the metal caesium, owing to there is not the inside surface emitting electrons of the oxide active electrode cup 11 of metal caesium, it is higher relatively to make the emitting electrons required voltage fall, make the electronics of pole cup 11 be difficult for launching, can cause the black dull start-up time of cold-cathode fluorescence lamp long, even not start.
Described fluorescent powder 2 can be three primary colours (RGB) fluorescent powder, be specially the three primary colors fluorescent powder that adopts the nanometer coating, before dusting, reject very big particle and nano sized particles fluorophor, in the present invention, the mean grain size of described fluorescent powder 3 can be 4.7 microns～5 microns scope, because the present invention selects the fluorophor of particle size the best as being coated with powder material, make the briliancy of cold-cathode fluorescence lamp be improved significantly, the operating circuit that makes cold-cathode fluorescence lamp need under same brightness reduces, the minimizing of working current can reduce the decay of electrode, thereby prolong the serviceable life of electrode, and then prolong serviceable life of whole cold-cathode fluorescence lamp, promote the raising of display whole service life;
By adopting the three primary colors fluorescent powder of nano-coating, suppressed the light decay that fluorescent powder grain causes effectively, can prolong the serviceable life of fluorescent powder greatly, thereby reach high brightness, suppressed the light decay phenomenon that fluorescent powder causes effectively.
In the present invention, because size and material to electrode, the material of fluorescent powder improves, as mentioned above, under equal brightness situation, can reduce the required working current of cold-cathode fluorescence lamp, the working current of existing cold-cathode fluorescence lamp is 7～8mA, compared with prior art, on the specific implementation, the working current of described cold-cathode fluorescence lamp of the present invention can be the low current of 4mA～6.8mA, because working current reduces, the thermal value of cold-cathode fluorescence lamp reduces, make the Heat stability is good of cold-cathode fluorescence lamp, reduced the operating power of cold-cathode fluorescence lamp, make that its every photoelectric parameter index is more stable.Simultaneously, because working current reduces, the electrode thermal value reduces, and electrode temperature can reduce, thereby it is oxidized because temperature is high to avoid electrode 1.
In sum, compared with prior art, the invention provides a kind of long-life display, adopted improved cold-cathode fluorescence lamp, and compensate because the long-time light decay that causes that uses of liquid crystal panel by the brightness that improves liquid crystal panel backlight, promote the serviceable life of liquid crystal panel, and then the whole service life of raising LCD, guarantee the economic interests of display user, satisfy the needs of people's life better, strengthen the product use experience of display user greatly, be of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a long-life display is characterized in that, includes generation unit backlight and timing light intensity control module, wherein:
Generation unit backlight is used for sending on the liquid level panel of display backlight;
Regularly brightness control unit is connected with generation unit backlight, is used for the working time of real-time statistics display, when arriving default working time of display, improves the working current of generation unit backlight automatically, the brightness that realizes improving display.
2. display as claimed in claim 1, it is characterized in that, described generation unit backlight is a cold-cathode fluorescence lamp, include glass lamp (3), described glass lamp (3) two ends are respectively arranged with an electrode (1), described glass lamp (3) inwall scribbles fluorescent powder (2), each described electrode (1) head has electrode terminal 10, the tail end of described electrode (1) has pole cup (11), described pole cup (11) is positioned at described glass lamp (3) inside, two ends, and the inside surface of described pole cup (11) applies the oxide of caesium.
3. cold-cathode fluorescence lamp as claimed in claim 1 is characterized in that the oxide of described caesium is evenly coated in the inside surface of described pole cup (11).
4. cold-cathode fluorescence lamp as claimed in claim 3 is characterized in that, the width of described pole cup (11) is 1.45～3.0mm, and length is 6～30mm.
5. cold-cathode fluorescence lamp as claimed in claim 2 is characterized in that, the mean grain size of described fluorescent powder (2) is 4.7 microns～5 microns.
6. cold-cathode fluorescence lamp as claimed in claim 3 is characterized in that, described fluorescent powder (2) is for adopting the three primary colors fluorescent powder of nanometer coating.
7. cold-cathode fluorescence lamp as claimed in claim 6 is characterized in that, the working current of described cold-cathode fluorescence lamp is 4mA～6.8mA.
8. cold-cathode fluorescence lamp as claimed in claim 2 is characterized in that, described glass lamp (3) inside is full of the argon neon mixture body is arranged, and the argon gas ratio in the described glass lamp 3 is 5%-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102070722A CN102044224A (en) | 2009-10-19 | 2009-10-19 | Long-life display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102070722A CN102044224A (en) | 2009-10-19 | 2009-10-19 | Long-life display |
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| CN102044224A true CN102044224A (en) | 2011-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730090A (en) * | 2014-01-13 | 2014-04-16 | 西北工业大学 | Circuit and method for digital compensation correction of OLED luminous efficiency attenuation |
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- 2009-10-19 CN CN2009102070722A patent/CN102044224A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730090A (en) * | 2014-01-13 | 2014-04-16 | 西北工业大学 | Circuit and method for digital compensation correction of OLED luminous efficiency attenuation |
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Owner name: TIANJIN SANXING ELECTRONIC CO., LTD. Free format text: FORMER OWNER: SANSUNG ELECTRONIC DISPLAY CO., LTD., TIANJIN Effective date: 20111024 |
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Effective date of registration: 20111024 Address after: 300385 Micro Electronics Development Zone, Tianjin economic and Technological Development Zone, four Applicant after: Tianjin Sanxing Electronic Co., Ltd. Address before: 300385 micro industry road, Microelectronics Industrial Zone, Tianjin economic and Technological Development Zone, four Applicant before: Sansung Electronic Display Co., Ltd., Tianjin |
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Application publication date: 20110504 |