TWI407824B - System for displaying images - Google Patents

Abstract

A system for displaying images employing an organic electroluminescent device is provided. The organic electroluminescent device comprises a first electrode, an organic electroluminescent element disposed on the first electrode, a second electrode disposed on the organic electroluminescent element, and a color tuning element disposed on the second electrode. In particular, the color tuning element has a thickness range T1: 3500 Å ≤ T1 ≤ 4500 Å , 6500 Å ≤ T1 ≤ 7500 Å , 9500 Å ≤ T1≤ 10500 Å , 11000 Å ≤ T1 ≤ 12000 Å , 13500 Å ≤ T1 ≤ 14500 Å , 16500 Å ≤ T1 ≤ 17500 Å , or 18500 Å ≤ T1 ≤ 19500 Å.

Description

Image display system

The present invention relates to an image display system including an organic electroluminescent device.

In recent years, organic light emission display (OLED) has been widely used in display elements of various products, and has self-luminous, high brightness, wide viewing angle, high response speed and easy process. characteristic. However, there is still room for improvement in the luminous efficiency of the organic electroluminescence device, and the organic electroluminescence device is easily damaged by the infiltration of water and gas, so the reliability is still not satisfactory.

1 is a cross-sectional view of an organic electroluminescent device unit of US Pat. No. 20080129191A1, which is a lower-emitting organic electroluminescent device 100 having a structure other than a substrate 102 of a general organic electroluminescent device. The transparent electrode 106, the hole injection layer 108, the hole transport layer 110, the blue light-emitting layer 112, the green light-emitting layer 114, the red light-emitting layer 116, the electron transport layer 118, the electron injection layer 120, and the reflective electrode 122 are attached to the substrate. An optical path control layer 104 is disposed between the 102 and the transparent electrode 106. However, the optical path control layer 104 of the organic electroluminescent device of this technology only reveals two specific thicknesses (660 nm and 750 nm), and the optical path control layer 104 is directly formed on the substrate 102, and the organic electro-active material film layer (including the hole injection layer 108, the hole transport layer 110, the blue light-emitting layer 112, the green light-emitting layer 114, the red light-emitting layer 116, the electron transport layer 118, and the electron injection layer 120) are formed in the light path control layer 104. outer. Therefore, the light path control layer 104 does not have the ability to protect the organic electroluminescent device, and the public opinion has a function of preventing moisture from infiltrating. Moreover, this U.S. patent does not further discuss how to solve the problem of residual stress caused by the optical path control layer 104.

Therefore, there is an urgent need in the industry for a novel organic electroluminescent device that solves the problems of the prior art.

According to the present invention, there is provided an image display system comprising: an organic electroluminescent device comprising: a first electrode; an organic electroluminescent unit disposed on the first electrode; and a second electrode disposed in the An electromechanical excitation light unit; and a first color adjustment unit disposed on the second electrode, wherein the thickness T1 of the first color adjustment unit conforms to the following range:

The image display system including the organic electroluminescent device according to the present invention will be described below in conjunction with the drawings.

Referring to FIG. 2, an organic electroluminescent device 200 included in an image display system according to an embodiment of the present invention is shown. The organic electroluminescent device 200 can be a top-emission full-color organic electroluminescent device, and can include a substrate 202. The first electrode layer 204 and the organic electroluminescent device are sequentially included on the substrate 202. 206. The second electrode layer 208 and the organic electroluminescent diode formed by the color adjustment unit 210. The substrate 202 can be a glass substrate, a plastic substrate, or a semiconductor substrate on which any desired components (e.g., thin film transistors) can be formed, but for the sake of simplicity of the drawing, only the flat substrate is shown. The first electrode layer 204 can be a reflective electrode layer that totally reflects the light scattered toward the substrate 202. The material of the reflective electrode layer 204 can include silver (Ag), aluminum (Al), gold (Au), or a combination thereof. In addition, according to another embodiment of the present invention, the first electrode layer 204 may also be a transparent electrode, and the organic electroluminescent device 200 further includes a reflective layer 212 to form the substrate 202 and the first electrode layer 204. For the purpose of totally reflecting the light scattered toward the substrate 202. The material of the transparent electrode may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc aluminum oxide (AZO), zinc oxide (ZnO), or a combination thereof.

The organic electroluminescent device 206 may include at least one light emitting layer. Referring to FIG. 3, the organic electroluminescent unit 206 may sequentially include a hole from bottom to top (the first electrode side to the second electrode side). Injection layer 214, hole transport layer 216, red light-emitting layer 218, block layer 220, blue light-emitting layer 222, green light-emitting layer 224, electron transport layer 226, and electron injection layer 228, organic electroluminescent light unit 206 thickness can be 800~1000 However, the composition, material, and thickness of the organic electroluminescent sheet 206 can be changed by those skilled in the art.

The second electrode layer 208 is a transparent electrode and is made of a light-transmissive metal or metal oxide such as indium tin oxide, indium zinc oxide, zinc aluminum oxide or zinc oxide.

According to the organic motor lighting apparatus 200 of the present invention, the color adjustment unit 210 is formed on the second electrode layer 208 to enhance the light intensity of red, green, and blue light, respectively. Referring to FIG. 4, when the thickness T1 of the adjustment color adjustment unit 210 satisfies the following range:

The blue light, red light and green light of the organic electroluminescent device have relatively large strength at the same time, and thus the mixed white light has better luminous efficiency. Therefore, the present invention can achieve the purpose of adjusting the color coordinates of the organic electroluminescent device by adjusting the thickness or composition of the color adjusting unit 210. In addition, since the material of the color adjustment unit 210 may be composed of a germanium-containing material having a refractive index of 1.4 to 2.2 (for example, hafnium oxide, tantalum nitride, hafnium oxynitride, or a combination thereof), and formed in the organic electroluminescent unit. Above the 206, the non-conventional technology (please refer to FIG. 1) is formed under the organic electroluminescent light unit, so the color adjustment unit 210 can simultaneously serve as a protective layer of the organic electroluminescent device 200, and can be provided The electromechanical excitation unit provides better protection and prevents moisture from penetrating into the organic electroluminescent device. Furthermore, the color adjustment unit 210 used in the present invention has a large increase in thickness, which can enhance the protective element and prevent the infiltration of moisture.

According to an embodiment of the present invention, referring to FIG. 5, the color adjustment unit 210 may be composed of color adjustment layers 230, 232, and 234. The color adjustment layer 230 may be disposed on the second electrode layer 208, wherein the color adjustment layer 230 may be composed of a material having a refractive index of 1.4 to 1.6, the material may be yttrium oxide, and the thickness of the color adjustment layer 230 is less than 1000. For example, the color adjustment layer 230 may have a thickness of 50 The color adjustment layer 232 may be disposed on the color adjustment layer 230. The color adjustment layer 232 may be composed of a material having a refractive index of 1.6 to 2.2, and the material may be tantalum nitride; and the color adjustment layer 234 may be disposed in the color adjustment layer. Above the layer 232, the color adjustment layer 234 may be composed of a material having a refractive index of 1.5 to 2.0, the material may be bismuth oxynitride, and the thickness of the color adjustment layer 234 is between 500 and 1500. Between, for example, the color adjustment layer 234 may have a thickness of 1000 . It should be noted that the total thickness of the color adjustment layer 230, the color adjustment layer 232, and the color adjustment layer 234 may be T1. According to other embodiments of the present invention, the thickness of the color adjustment layer 232 may be T1, and the total thickness of the color adjustment layer 230, the color adjustment layer 232, and the color adjustment layer 234 is greater than T1.

In accordance with another embodiment of the present invention, referring to FIG. 6, the organic electroluminescent device 200 can include two color adjustment units 210 and 236 and separate the color adjustment units 210 and 236 with a stress relief layer 238. The color adjusting units 210 and 236 may be composed of a material having a refractive index of 1.4 to 2.2, including cerium oxide, cerium nitride, cerium oxynitride, or a combination thereof. The thickness of the color adjustment unit 210 is defined as previously described, and in addition, the thickness T2 of the color adjustment unit 236 conforms to the following range:

. The stress relief layer 238 is used to relieve the stress residue caused by the thicker color adjustment unit. The stress relief layer 238 may have a refractive index of 1.4 to 2.2, and the material may include indium tin oxide, indium zinc oxide, and zinc. Aluminum oxide, zinc oxide, aluminum oxide, or a combination thereof. In addition, the thickness of the stress relief layer 238 can range from 500 to 2000. For example, the stress relief layer 238 may have a thickness of 1000 . In an embodiment of the invention, the difference between the refractive index of the color adjustment unit 210, the stress relief layer 238, and the color adjustment unit 236 is not greater than 1, to facilitate the removal of light by the organic electroluminescent light unit 206 ( Light extraction). In addition, the color adjustment unit 210 and the color adjustment unit 236 can be manufactured differently than the stress relief layer 238 to facilitate the release of stress. For example, the color adjustment unit 210 and the color adjustment unit 236 are manufactured in the following manner. Sputtering, and the stress relief layer 238 is not sputtered, for example, chemical vapor deposition (CVD); if the color adjusting unit 210 and the color adjusting unit 236 are manufactured by chemical Vapor deposition, while the stress relief layer 238 is produced in a non-chemical vapor deposition manner, and may be, for example, a sputter. Therefore, the stress relationship between the color adjustment unit 210, the stress relief layer 238, and the color adjustment unit 236 may be compressive stress/tensile stress/compression stress or tensile stress/ Compressive stress/tensile stress, which is determined by the manner of formation.

According to another embodiment of the present invention, the organic electroluminescent device 200 of FIG. 7 may include two color adjusting units 210 and 236, and the color adjusting units 210 and 236 are separated by a stress releasing layer 238, and the color adjustment is performed. The unit 236 includes color adjustment layers 240 and 242. The color adjustment layer 240 may be composed of a material having a refractive index of 1.4 to 2.2, such as hafnium oxide, tantalum nitride, hafnium oxynitride, or a combination thereof, and the color adjustment layer 242 is formed on Above the color adjustment layer 240, the color adjustment layer 242 may be composed of a material having a refractive index of 1.4 to 1.6, such as yttrium oxide, or the color adjustment layer 242 is composed of a material having a refractive index of 1.5 to 2.0, such as oxynitridation. Hey. In addition, the color adjustment layer 242 may also be formed under the color adjustment layer 240. For example, the color adjustment unit 236 may have a thickness of 10,000. Wherein the color adjustment layer 242 may have a thickness of 1000 . Here, the material and the refractive index of the color adjustment layer 240 are the same as those of the color adjustment layer 232 shown in FIG. 5, and the color adjustment layer 240 corresponds to the color adjustment layer 230 shown in FIG. 5 (for the material and the refractive index). In terms of).

Please refer to FIG. 8 , which is a cross-sectional view of an organic electroluminescent device 400 according to another embodiment of the present invention. The organic electroluminescent device 400 is a plurality of organic electroluminescent diodes (as shown in FIG. 2 ). An organic electroluminescence photodiode system is disposed on the substrate 202 and disposed between the substrate 202 and the substrate 412. Each of the organic electroluminescent diodes includes a first electrode 204, an organic electroluminescence unit 206, and a second electrode. 208, and a color adjustment unit 210. Here, the color adjustment unit 210 is formed on each of the second electrodes 208 in advance, and is not continuous. In addition, referring to FIG. 9, according to another embodiment of the present invention, a substrate 412 is disposed above the substrate 202, and a red pixel 414, a green pixel 416, and a blue pixel 418 are formed thereon, and each pixel is disposed. A black matrix 420 (black matrix), the plurality of organic electroluminescent dipole systems stacked on the substrate 202, the first electrode 204, the organic electroluminescent unit 206 and the second electrode 208 respectively correspond to the red pixel 414, green painting Prime 416 and blue pixel 418. In this embodiment, the color adjusting unit 210 is disposed on the second electrode 208 of each of the organic electroluminescent diodes after the organic electroluminescent diodes are disposed on the substrate 202. The formed color adjusting unit 210 is a continuous film layer and covers the side wall of the organic electroluminescent diode, and in addition to providing protection, it can prevent moisture from infiltrating. Furthermore, the color adjustment unit 210 has the same thickness corresponding to the portions of the red pixel 414, the green pixel 416, and the blue pixel 418, respectively, in other words, the color adjustment unit 210 has a uniform thickness.

Referring to FIG. 10, which is a cross-sectional view of an organic electroluminescent device 400 according to another embodiment of the present invention, it should be noted that the same reference numerals are used for the elements of the embodiment and the embodiment of the ninth embodiment. Different from the embodiment of FIG. 9, the color adjustment unit of the embodiment corresponds to the portion 502R of the red pixel 414, the color adjustment unit corresponds to the portion 502G of the green pixel 416, and the color adjustment unit corresponds to the blue pixel. The thickness of the portion 502B of 418 is different, in other words, the color adjusting unit of the embodiment has a non-uniform thickness. Please note that the non-uniform thickness color adjustment layer of this embodiment can be formed by a patterning technique such as lithography or etching. On the other hand, in this embodiment, the relationship between the red, blue, and green light intensity and the color adjustment unit shown in FIG. 4 can be adjusted, and the thickness of the unit can be adjusted by an appropriate color to achieve the maximum output of the red, blue, and green light colors, respectively. For example, the portion 502B of the color adjustment unit corresponding to the blue pixel 418 may be thicker than the portion 502R corresponding to the red pixel 414, and the portion 502R corresponding to the red pixel 414 corresponds to the green pixel 416. The part is 502G thick to improve the efficiency of the components and optimize the color coordinates. Moreover, for example, the thickness T _B of the portion 502B of the color adjustment layer corresponding to the blue pixel 418 may be approximately 19,500. The thickness T _R of the portion 502R corresponding to the red pixel 414 may be about 7,500. The thickness TG corresponding to the portion 502G of the green pixel 416 may be about 4000. , that is, T _B >T _R >T _G . In other embodiments, the color adjustment layers 502B, 502R, and 502G may also be adjusted according to the relationship diagram shown in FIG. 4 to respectively make the red, blue, and green light colors have strong light intensity, and thus the color adjustment layers 502B and 502R. The thickness of 502G may also be T _R >T _B >T _G , T _B >T _G >T _R , or other combinations.

Referring to FIG. 11, which is a cross-sectional view showing an organic electroluminescent device 400 according to another embodiment of the present invention, different from the embodiments of FIGS. 9 and 10, the color filter substrate of the present embodiment is formed. Red pixel 602, green pixel 604, blue pixel 606, and white pixel 608. In this embodiment, the color adjusting unit 610 has the same thickness corresponding to the red pixel 602, the green pixel 604, the blue pixel 606, and the white pixel 608. In other words, the color adjusting unit 610 of the embodiment has uniformity. thickness.

Please refer to FIG. 12, which is a cross-sectional view of an organic electroluminescent device 400 according to another embodiment of the present invention. Unlike the embodiment of FIG. 11, the color adjusting unit of the embodiment corresponds to a portion of the red pixel 702. 710R, the portion 710G corresponding to the green pixel 704, the portion 710B corresponding to the blue pixel 706, and the portion corresponding to the portion 710W of the white pixel 708 are different in thickness. In another aspect, the present invention can be configured such that the color adjustment unit corresponds to the portion 710B of the blue pixel 706 that is thicker than the portion 710R corresponding to the red pixel 702, corresponding to the portion of the red pixel 702. 710R corresponds to a portion of 710G thick green 704, and portion 710G corresponding to green pixel 704 and portion 710W corresponding to white pixel 708 may have substantially the same thickness. For example, the thickness of the portion 710B of the color adjustment unit corresponding to the blue pixel 706 of the embodiment is about 19,500. The thickness of the portion 710R corresponding to the red pixel 702 is about 7,500. , the thickness of part 710G corresponding to green pixel 704 is about 4000 , the thickness of the part 710W corresponding to the white pixel 708 is about 4000 . In other embodiments, the thicknesses of the color adjustment layers 710B, 710R, 710G, and 710W can also be adjusted according to the relationship diagram shown in FIG.

FIG. 13 is a block diagram showing an image display system according to another embodiment of the present invention, which can be implemented on a display device 300 or an electronic device 500, such as a notebook computer, a mobile phone, a digital camera, a personal digital assistant, and a table. A computer, TV, car monitor, or portable digital video disc player. The electroluminescent device 200 or 400 according to the present invention may be disposed on the display device 300. In other embodiments, the display device 300 can be disposed in the electronic device 500. As shown in FIG. 13, the electronic device 500 includes a display device 300 and an input unit 350. The input unit 350 is coupled to the display device 300 for providing an input signal (eg, an image signal) to the display device 300 to generate an image.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope is based on the definition of the scope of the patent application attached.

100, 200, 400. . . Organic electroluminescent device

102, 202, 412. . . Substrate

104. . . Optical path control layer

106. . . Transparent electrode

108, 214. . . Hole injection layer

110,216. . . Hole transport layer

112, 222. . . Blue luminescent layer

114, 224. . . Green light layer

116, 218. . . Red luminescent layer

118,226. . . Electronic transport layer

120, 228. . . Electron injection layer

122, 212. . . Reflective electrode (layer)

204. . . First electrode

206. . . Organic electroluminescent unit

208. . . Second electrode

210, 236. . . Color adjustment unit

220. . . Barrier layer

230, 232, 234, 240, 242, 610. . . Color adjustment layer

238. . . Stress relief layer

300. . . Display device

350. . . Input unit

414, 602, 702. . . Red pixel

416, 604, 704. . . Green pixel

418, 606, 706. . . Blue pixel

420. . . Black matrix

500. . . Electronic device

502R, 710R. . . The color adjustment layer corresponds to the red pixel

502G, 710G. . . The color adjustment layer corresponds to the green pixel

502B, 710B. . . The color adjustment layer corresponds to the blue pixel

608, 708. . . White pixel

710W. . . The color adjustment layer corresponds to the part of the white pixel

T1, T2. . . Color adjustment unit thickness

T _B . . . The color adjustment layer corresponds to the thickness of the portion of the blue pixel

T _G . . . The color adjustment layer corresponds to the thickness of the green pixel portion

T _R . . . The color adjustment layer corresponds to the thickness of the red pixel portion

Fig. 1 is a cross-sectional view showing a conventional organic electroluminescent device.

2 is a cross-sectional view showing an organic electroluminescent device according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing an organic electroluminescent device according to another embodiment of the present invention.

Fig. 4 is a graph showing the relationship between the thickness and the peak intensity of the color adjusting unit of the organic electroluminescent device according to an embodiment of the present invention.

Figure 5 is a cross-sectional view showing an organic electroluminescent device according to still another embodiment of the present invention.

Figure 6 is a cross-sectional view showing an organic electroluminescent device according to still another embodiment of the present invention. .

Figure 7 is a cross-sectional view showing an organic electroluminescent device according to still another embodiment of the present invention.

Figure 8 is a cross-sectional view showing an organic electroluminescent device according to still another embodiment of the present invention.

Figure 9 is a cross-sectional view showing an organic electroluminescent device having a color filter substrate in accordance with an embodiment of the present invention.

Figure 10 is a cross-sectional view showing an organic electroluminescent device having a color filter substrate according to another embodiment of the present invention.

Figure 11 is a cross-sectional view showing an organic electroluminescent device having a color filter substrate according to still another embodiment of the present invention.

Figure 12 is a cross-sectional view showing an organic electroluminescent device having a color filter substrate according to still another embodiment of the present invention.

Figure 13 is a block diagram showing an image display system in accordance with an embodiment of the present invention.

200. . . Organic electroluminescent device

202. . . Substrate

204. . . First electrode

206. . . Organic electroluminescent unit

208. . . Second electrode

210. . . Color adjustment unit

212. . . Reflective layer

214. . . Hole injection layer

216. . . Hole transport layer

218. . . Red luminescent layer

220. . . Barrier layer

222. . . Blue luminescent layer

224. . . Green light layer

226. . . Electronic transport layer

228. . . Electron injection layer

Claims (30)

An image display system comprising: an organic electroluminescent device comprising: a first electrode; an organic electroluminescent unit disposed on the first electrode; and a second electrode disposed on the organic electroluminescent unit a first color adjustment unit disposed on the second electrode, wherein the thickness T1 of the first color adjustment unit meets the following range: 3500 Å T1 4500Å, 6500Å T1 7500Å, 9500Å T1 10500Å, 11000Å T1 12000 Å, 13500 Å T1 14500Å, 16500Å T1 17500Å, or 18500Å T1 a stress relief layer disposed on the first color adjustment unit; and a second color adjustment unit disposed on the stress relief layer, wherein the thickness T2 of the second color adjustment unit meets the following range: 3500 Å T2 4500Å, 6500Å T2 7500Å, 9500Å T2 10500Å, 11000Å T2 12000 Å, 13500 Å T2 14500Å, 16500Å T2 17500Å, or 18500Å T2 19500Å. The image display system of claim 1, wherein the first color adjustment unit comprises a first color adjustment layer, wherein the first color adjustment layer is composed of a material having a refractive index of 1.6 to 2.2. An image display system as described in claim 2, wherein The first color adjustment layer comprises tantalum nitride. The image display system of claim 2, wherein the first color adjustment unit further comprises: a second color adjustment layer disposed between the first color adjustment layer and the second electrode, wherein the second The color adjustment layer is composed of a material having a refractive index between 1.4 and 1.6. The image display system of claim 4, wherein the second color adjustment layer comprises ruthenium oxide. The image display system of claim 4, wherein the thickness of the second color adjustment layer is less than 1000 Å. The image display system of claim 4, wherein the first color adjustment unit further comprises: a third color adjustment layer disposed on the first color adjustment layer, wherein the third color adjustment layer is It consists of a material with a refractive index between 1.5 and 2.0. The image display system of claim 7, wherein the third color adjustment layer comprises bismuth oxynitride. The image display system of claim 7, wherein the third color adjustment layer has a thickness of between 500 and 1500 Å. The image display system of claim 1, wherein the first electrode is a transparent electrode, and the organic electroluminescent device further comprises a reflective layer disposed under the first electrode. The image display system of claim 1, wherein the stress relief layer comprises indium tin oxide, indium zinc oxide, zinc aluminum oxide , zinc oxide, aluminum oxide, or a combination thereof. The image display system of claim 1, wherein the stress relief layer has a refractive index of 1.4 to 2.2. The image display system of claim 1, wherein the stress relief layer has a thickness of between 500 and 2000 Å. The image display system of claim 1, wherein the first color adjustment unit comprises a first color adjustment layer, and the first color adjustment layer is composed of a material having a refractive index of 1.4 to 2.2. The image display system of claim 14, wherein the first color adjustment layer comprises ruthenium oxide, ruthenium nitride, ruthenium oxynitride, or a combination thereof. The image display system of claim 14, wherein the second color adjustment unit comprises a second color adjustment layer, and the second color adjustment layer is composed of a material having a refractive index of 1.4 to 2.2. The image display system of claim 16, wherein the second color adjustment layer comprises ruthenium oxide, ruthenium nitride, ruthenium oxynitride, or a combination thereof. The image display system of claim 16, wherein the second color adjustment unit further comprises a third color adjustment layer disposed above or below the second color adjustment layer and is comprised of a refractive index It consists of materials from 1.4 to 1.6. An image display system as described in claim 18, The third color adjustment layer comprises yttrium oxide. The image display system of claim 16, wherein the second color adjustment unit further comprises a third color adjustment layer disposed above or below the second color adjustment layer and is comprised of a refractive index It is composed of 1.5~2.0 materials. The image display system of claim 20, wherein the third color adjustment layer comprises bismuth oxynitride. The image display system of claim 1, wherein the stress relationship between the first color adjustment unit, the stress relief layer, and the second color adjustment unit is sequentially compressive stress/tensile stress/compression stress, Or tensile stress / compressive stress / tensile stress. The image display system of claim 1, wherein a difference in refractive index of the first color adjustment unit, the stress relief layer, and the second color adjustment unit is no more than 1. The image display system of claim 1, further comprising a color filter substrate disposed on the organic electroluminescent device, the color filter substrate comprising a red pixel, a green pixel and a blue Color pixels. The image display system of claim 24, wherein the first color adjustment unit has a different thickness corresponding to a portion of the red pixel, the green pixel, and the blue pixel. The image display system of claim 24, wherein the first color adjustment unit corresponds to a red pixel, the green pixel, and the The parts of the blue pixels have the same thickness. The image display system of claim 24, wherein the color filter substrate further comprises a white pixel, and the first color adjustment unit corresponds to a red pixel, the green pixel, and the blue color The element and the part of the white pixel have different thicknesses. The image display system of claim 1, further comprising a display device comprising the organic electroluminescent device. The image display system of claim 28, further comprising: an electronic device, wherein the electronic device comprises: the display device; and an input unit coupled to the display device, wherein the input unit transmits a Signal to the display device to generate an image. The image display system of claim 29, wherein the electronic device is a mobile phone, a digital camera, a personal digital assistant, a notebook computer, a desktop computer, a television, a car display, or a portable digital audio and video disc. player.