TW425535B - Plasma display panel using light shading layer to control the color temperature - Google Patents

Abstract

A plasma display panel which comprises a rear plate, a front plate installed in parallel on top of the rear plate, a plurality of electrode pairs, a plurality of ribs, and a light shading layer. Each electrode pair includes one first electrode and one second electrode installed in parallel with the first direction and equidistantly under the front plate. The plurality of ribs includes at least a first rib, a second rib, and a third rib installed in parallel with the second direction on top of the rear plate. The first sub pixel unit is formed at the intersection of the first rib, the second rib and the electrode pair. The second sub pixel unit is formed at the intersection of the second rib, the third rib and the electrode pair. The light shading layer is installed on part of the surface of the front plate to block some portion of light which will penetrate the first sub pixel unit and the second sub pixel unit. The area of the light shading layer of the first sub pixel unit is less than that of the second sub pixel unit, so that the transmittance of the first sub pixel unit is greater than that of the second sub pixel unit to control the color temperature.

Description

V. Description of the invention (1) The present invention provides a plasma display panei PDP, particularly a plasma 'indicator that controls the color temperature of a pixel unit by using light transmittance. The term S cluster a light ΊX shows that P is visible. It is possible to produce a large amount of electric energy when the body is out of the body and that is fluorescent. ^ Make the ruler, and the drive light on the moving body should be extremely fluorescent. Radiation is already a illuminator. Production \ Please refer to Figure 1. FIG. 1 is a schematic diagram of a conventional plasma display 10. It is known that the plasma display 10 includes a casing (not shown), a rear plate 12 and a front plate 14 mounted on the rear plate 12 in parallel. The front panel 14 is a transparent body. ^ A plurality of electrode pairs (e 1 ect pair) 16 ′ are provided on the lower side of the front plate 1 4 and each electrode pair 16 includes two elongated electrodes 18 ′ and a dielectric layer 2 0 is provided on the front plate 1 4 The lower side covers electrode pairs 16 to protect the electrode pairs 16 '. A protective layer 2 2 is disposed below the dielectric layer 20 to protect the dielectric layer 2 from degradation caused by plasma sputtering. . The protective layer 22 is usually made of magnesium oxide θ (MgO). The rear plate 12 is provided with a plurality of barrier ribs 24, a plurality of data electrodes ((1 & 1 & 616 (: 1; 1'〇 (16) 26) are located between the barrier ribs 24, and blue, Red and green phosphors 30B, 30R, 30G are sequentially filled between the barrier walls 24. Ionizing gas is filled between every two adjacent barrier walls 24. The tops of the plurality of barrier walls 24 It is fixed on the underside of the protective layer 2 2 for blocking and isolation so that the electrical coating on the two sides of the barrier wall 2 4 cannot be mutually 4 2553 5 V. Description of the invention (2) Each electrode 18 includes a sustaining electrode (Sustairl eiectróde) 36 and an auxiliary electrode 38. The sustaining electrode 36 is a wider and nearly transparent conductor, usually made of indium tin oxide (IT0), which is used to trigger and maintain Discharge》 Auxiliary electrode 38 is a thin and opaque metal wire 'usually made of three layers of copper-copper-chromium metal. It is used to assist the sustain electrode 36 to trigger discharge and reduce the resistance of the electrode 丨 8. As shown in the figure, a pixel unit (sub Pix) is formed at the intersection of every two partition walls 24 and electrode pairs 16. ei uni1;) 32B, 32R, or 32G. The three sub-pixel units 32B, 32R, and 32G constitute a pixel unit 34. When a voltage is applied to the two electrodes u and 32B, 32R, and 32G of the sub-pixel unit, and When the data electrodes 26 are in between, an electric field will be formed between the two electrodes 18 and the data electrodes 26, which will cause the discharge of ionized gas to generate ultraviolet rays and illuminate the phosphors 30B, 30R, or 30G to emit light. There are many reasons for the luminous efficiency of the pixel units 32B, 32R, and 32G ^ Many 'such as filled ionizing gas, type of electrode, and phosphor efficiency, etc. β Generally, when designing a plasma display, each sub-pixel 32R, 32G, 32B, etc. The luminous efficiency is similar to increase the color temperature of the entire plasma display, making the daylight surface more vivid. However, in terms of existing materials, the red phosphor 30R has the best luminous efficiency, and the green phosphor 30 g. 4 2 5 5 3 5 V. Description of the invention (3) Secondly, the blue phosphor 30 B is the worst. In this case, in the case of 4, unevenness occurs in the sub-pixel units 32B and 32R of each color. The whole plasma display is improved. Please refer to the figure 2. Figure 2 is another conventional plasma display. Another conventional plasma display 40 is to solve the main difference between the display 40 and the plasma display 10. The barrier of the plasma display 10 Walls 2 4 are non-equidistant barriers 4 4 are non-equidistant. Covering blue barriers has the widest spacing, covering green phosphors 3 G and E, and red phosphors 3 0 R. The larger the distance λ between the barrier ribs, the more phosphors that can emit light. In this case, the luminous efficiency of the body is different, so that the brightness of each sub-pixel 32 G is uniform, and the purpose of increasing the color temperature is achieved. However, since the barrier wall 44 of the barrier wall 44 of the plasma display 40 must be made smaller than the barrier wall 24 of the same resolution 10, the distance between the barrier walls 24 and 4 is high, which means that the manufacturing is high to make the distance smaller. Barrier wall 44. Generally, the distance between the barrier walls of phosphors 3 〇 Β must be higher than that of green 3 G, so that the color temperature can be significantly improved. In today's day, this solution will increase the difficulty of manufacturing: other conditions are the same. 3 The brightness and color temperature of 2 G also indicate the above problem without the indicator 40. Plasma is located in the column of the barrier wall 4, but the plasma shows that the color phosphors 3 0 Β and the distance between the barrier ribs are. The distance between the barriers can be adjusted for each color fluorescent element 32B, 32R, so the accuracy of the plasma display below must be mentioned. Covering blue and red 30 feet is 20% larger than the resolution requirements. V. Description of the invention (4) ^ The production of the image is to provide a kind of paste that uses the amount of light transmission to control the dry bar _show 5 |, JL Tongde ™ — _ _ pixel units have different transmission 詈 ° ^ The color temperature at various times as early as 70. First, let ’s take a look at the synthetic display with different colors of light! i 明 ϊ ί The plasma display 5 of the first embodiment of the present invention. J y onion diagram. The plasma display 50 of the present invention includes a plate 54 disposed on the upper side of the rear plate 52. j f 52 U and a cutting board 5 2 are parallel. 』⑤5 is a transparent plate and is provided with a plurality of electrode pairs (electrode PΘ · ιγ ·) 56 on the rear plate ^ and a dielectric layer 58 is located on the side and covers the electrode pairs. 56 'is used to protect the electrode pair 56, and-the underside of the layer 60M' is used to protect the dielectric layer 58 from the plasma. Inject it into deterioration. The mother-electrode pair 56 includes an electrode 63, which is provided on the front plate "underside" along the first direction χ in parallel. The first electrode 62 and the second electrode 63 include a sustain electrode. Generally, It is made of indium tin oxide (indi welcome tu oxide, IT 0), which is used to initiate discharge. The rear plate 52 is provided with a plurality of barrier ribs. The plurality of barrier ribs includes a first barrier rib 68, a second barrier rib 69, a third barrier rib 70, and a fourth barrier rib 71. A second direction γ is arranged on the rear plate 52 in parallel and equidistantly, and the second direction γ is perpendicular to the first direction X. plural

425535 V. Description of the invention (5) Data electrodes 72 are arranged on the rear plate 52 between the two barrier walls in parallel along the second direction γ. The phosphors 74B, 74R, and 74G that can emit blue, red, and green light are sequentially coated on the surface of the rear plate 52 and the barrier wall. ^ As shown in FIG. 3, the first barrier wall 68, the second barrier wall 69, and the father of the electrode pair 6 intersect ion to form a first pixel unit b (rit) 76B, and the second barrier wall 69, The three barrier walls have a second pixel unit 76R at the meeting of the father of the electrode pair 6, and the third barrier = barrier s η meets the electrode pair 56 to form a third second under pixel unit two, and the third time The pixel units 76B, 76 and π », 76 ^ f push image / @ 早 255 (Plxel unit) 78. The sub-pixel units 76B, 76R, and "pixel unit 78" refer to the area enclosed by the dotted line shown in FIG. Ling Yougu, and the third sub-pixel units 76B, 76R, and 76 (the three main systems are respectively equipped with phosphors 74B, 74R, and 74G, so the first, first, and flute one: Image: Unit 76B, trace return Do not display blue,;: green; ^ U; Ionizing gas is filled between the two adjacent walls. When the electrode pair is 56 m, or the plasma of the paste causes it to produce ionizing temple, the ultraviolet rays generated by the electric table will illuminate the fluorescent light. The body 74B, 74R, or Γ pixel unit 76B, 76R, or 76G emits a monochromatic light. The top of this isolation partition is fixed to the rear side of the front plate 54 and is used to isolate the electricity on the two sides of the partition. The pulp cannot circulate with each other. Please refer to Figure 4. Figure 4 is the pixel list of the electric paddle display 50 shown in Figure 3.

Page 9

425535 5. Description of the invention (6) Top view of element 78. As shown in FIG. 3 and FIG. 4, the plasma display 50 further includes a light-shielding layer 6 6 ′ disposed on a part of the surface of the electrode pair 56 of the front plate 5 4 ^ = to shield a part of the first and second to penetrate , And the third pixel unit, 7 6B, 76R, 76G light. The light-shielding layer 66 is formed by an opaque auxiliary electrode as shown in FIG. 4. The first, second, and third sub-pixel units 76B ′ 7 6 R, 7 6 G are blue sub-pixel units ’red sub-pixel units, and Green sub-pixel unit. The area of the light-shielding layer 66 in the first pixel unit 76B is smaller than the area of the light-shielding layer 66 in the second pixel unit 7 6 R, that is, the light transmittance of the blue sub-pixel unit 76 B is greater than that of the red sub-pixel unit 76R. Amount of light transmission. In addition, the area of the light shielding layer 66 in the third sub-pixel unit 76G is also smaller than the area of the light shielding layer 66 in the second sub-pixel unit 7 6 R, that is, the light transmission amount of the green sub-pixel unit 7 6 G is greater than that of the red sub-pixel. The amount of light transmitted by the unit 761 ^. The area of the light-shielding layer 66 in the first pixel unit 76B may be greater than or equal to the area of the light-shielding layer 66 in the third pixel unit 76B, so that the light transmittance of the blue sub-pixel unit π β is greater than or equal to green. The amount of light transmitted by the sub-pixel unit 76B. In this way, the proportion of the original three-color light can be changed to achieve the purpose of increasing the color temperature. See Figure 5. FIG. 5 is a top view of the pixel unit 92 of the plasma display 90 according to the second embodiment of the present invention. The main difference between the plasma display 9o and the plasma display 50 is the way the light-shielding layer is formed. The light shielding layer 66 of the plasma display 50 is composed of an auxiliary electrode, and the light shielding layer 94 of the plasma display 90 is composed of an opaque black matrix. Due to some knowledge

1__ Page 10 425535 V. Description of the invention (7) The transparent black panel of the electronic display is provided with a long black mask to prevent light leakage, so the conventional long black mask can be directly made into a zigzag Shape to form the above-mentioned light-shielding layer 94. Of course, the 'light-shielding layer 94 can also be formed by another opaque layer', and its position can be between the front plate 54, the dielectric layer 58, or the protective layer 60, or it can be provided on the upper side of the front plate 54. As long as the light shielding effects of the opaque layers above the different pixel units 76B, 76R, and 76G are different, the purpose of changing the proportion of the original three-color light to increase the color temperature can be achieved. See Figure_VI. FIG. 6 is a plasma display of a third embodiment of the present invention

w f Top view of a single π 1 0 2 pixel. The main difference between the plasma display 100 and the plasma display emperor 90 is that the plasma display 1 does not have light-shielding # 62 > i ^ and the first and second 1 of the unit 76B ΐΓ: the first and the first Fidi: The fourth hole 104, 107, the second one is the ordinary brother and the second electrode β 105 '108> ^ ^ S-ς has a second, fifth hole with a third, first 6 and the second electrode. Inside the first and fourth holes, the word 彳 109. First pixel unit £ 76

The second and fifth holes 105 and 105 are located in the first pixel 76F, the sixth hole 106 and 109 are in the third pixel unit 76G, and the fifth hole 105 and 108 ′. In the secondary pixel unit 76R

The material of the transparent conductor of "= 63," ^-, the second electrode is bright, but its light transmittance is still lower than that of transparency: "f tin 'Although this material is approximately the same as the holes 62, 63, the larger the hole, Therefore, the light transmittance of the first and second sub-pixel units 7 6 B * & / a P is larger. That is, the blue light is larger than that of the red sub-pixel unit 76R.

Page 11

i 425535 5. Description of the invention (8) The rate of 'green sub-pixel unit's light transmittance Xuan-cattle is also greater than the red long pixel; 7 6 R's light transmittance' is used to change the original three and *, early color temperature the goal of. When bran, the second time the image is +, it can increase the pole 6 2, 6 3 without holes, the same ratio of electricity to increase the color temperature. ΗAchieved ©. Which changed the original two-color light. Compared to the conventional plasma display ι〇, 40, the plasma display meter of the present invention ™ 〇 = 10 0 has a light shielding layer 6 6, 9 4 or a hole 1 〇 04 ~ 1 0, make the light transmittance of each color sub-unit 76B, 76G, 76B slightly different, so the sub-pixel units 76R, 76G, ^ B of the mother-pixel unit 78, 92, 102 can be adjusted to display different colors of light In order to increase the color temperature of the different colors of light in the synthesis ^, to achieve a better white balance (white balance) to make the daytime surface more vivid. The above is only the preferred embodiment of the present invention, and any application for a patent in accordance with the present invention All equal changes and modifications made within the scope shall fall within the scope of the invention patent.

Page 12 4 2553 5 Simple description of the simple style Simple description of the diagram ’Yuanyi is a schematic diagram of a conventional plasma display. FIG. 2 is a schematic diagram of a conventional plasma display. FIG. 3 is a schematic diagram of a plasma display according to a first embodiment of the present invention. FIG. 4 is a top view of a pixel unit of the plasma display shown in FIG. 3. FIG. 5 is a top view of a pixel unit of a plasma display according to a second embodiment of the present invention. Fig. 6 is a top view of a pixel unit of a plasma display according to a third embodiment of the present invention. Symbol description

50 '90 > 100 Plasma display 52 Back plate 54 Front plate 56 Electrode pair 58 Dielectric layer 60 Protective layer 62 No.-electrode 63 No. V 1 electrode 64 Maintenance electrode 66', 94 Light shielding layer 68 No.-barrier wall 69 No. Two barrier ribs 70, second barrier ribs 71, fourth barrier ribs 72, data electrodes 74B, 74R ', 74G, blue, red', green polished body 76B, 76R, 76G, first-'third pixel unit 78' , 92 '102 pixel units

Page 13 425535 Brief description of the drawings 1 0 4 ~ 1 0 7 First to sixth holes

Page 14

Claims (1)

6. Patent application scope 1. A plasma display panel (PD.P), which includes: a back plate; a front plate, the front plate is arranged on the back plate in parallel; an electrode pair ( electrode pair), the electrode pair includes a first electrode and a second electrode, and the first electrode and the second electrode are arranged along a first direction below the front plate; a plurality of ribs, The plurality of barrier ribs include at least a first barrier rib, a second barrier rib, and a third barrier rib, which are sequentially and parallelly disposed on the upper side of the rear plate along a second direction, and the second direction is connected to the first barrier rib. A direction is approximately vertical, and a first sub-pixel unit is formed at an intersection of the first barrier wall and the second barrier wall, and the second barrier wall, the third barrier wall, and the electrode A second pixel unit is formed at the intersection; and a light-shielding layer is disposed on a part of the surface of the front plate to shield a part of the light that is to penetrate the first pixel unit and the second pixel unit; In the first pixel unit The area of the light-based layer is less than the area of the second light-shielding layer of the second pixel unit, so that the light transmittance of the first lines of the pixel unit is greater than the transmittance of the second sub-pixel unit. 2. The plasma display of item 1 of the patent application, wherein the surface of the rear plate and the surface of two adjacent barrier walls in each pixel unit are covered with a phosphor for emitting a visible light, the first pixel unit The internal coating is capable of emitting blue light, and the second pixel unit is coated with Page 15 4 25Γ 6. Scope of patent application Fluorescent body emitting red light. 3. The plasma display of item 1 of the patent application scope, wherein the light-shielding layer is formed on the electrode pair to shield a part of the light that is to penetrate the electrode pair. 4. The plasma display of item 3 of the patent application, wherein the electrode pair is made of a transparent conductor, and the light-shielding layer is made of an opaque auxiliary electrode. 5. The plasma display of item 1 of the patent application scope, wherein the light shielding layer is composed of an opaque black mask (b 1 a c k m a t r i X). 6. A plasma display panel (PDP), comprising: a back plate; a front plate, the front plate is arranged on the back plate in parallel; an electrode pair, the electrode The pair includes a first electrode and a second electrode, and the first electrode and the second electrode are disposed on a lower side of the front plate along a first direction; and A plurality of barrier ribs (ribs), the plurality of barrier ribs including at least a first barrier rib, a second barrier rib, a third barrier rib, arranged in parallel along a second direction on the upper side of the rear plate in order , The second direction is approximately perpendicular to the first direction, and the first barrier wall, the second barrier wall and the electrode pair meet Page 16 6. A first pixel unit (sub pixel unit) is formed at the intersection of the patent application, and a second pixel unit is formed at the intersection of the second barrier wall, the third barrier wall and the electrode pair; The first electrode can filter out a part of light that is to penetrate the first pixel unit and the second pixel unit. The first electrode of the first pixel unit has a first hole, and the second pixel unit The first electrode has a second hole, and the first hole is larger than the second hole, so that the light transmittance of the first pixel unit is greater than the light transmittance of the second pixel unit. 7 The display shows the pulp fctio da, the M item L 6 and the enclosing surface model, please refer to the special application of the after-sales benefit, such as Yuandansu, each of which has a wall covering the uniform surface, and the adjacent wall cloth can be coated. The single-element single-pixel sub-image in the cloth-coated system is the second and the second. The light is visible and can be seen. A light body emits fluorescent light and a fluorescent light is used for color light, a blue body emits red light and a fluorescent light is emitted. The fluorescent light emitting device shows the structure of the plasma display device. The introductory item 6 passes the first circle from Fan Shao to Shen Ji. Leeden Special-As No. 1 and 8-Pole Electricity No. 1 Page 17