October 13, 2022
Wɔde draiver IC ahorow a ɛwɔ LCD nketewa so no abata ho wɔ akwan titiriw abien so. Nsonsonoe no tu mmirika kɔ akyiri kosi ne kɛse, wosow a wotumi gyina ano, nsu a ɛyɛ nwini a wotumi gyina ano, nhyiam ne nea wotumi siesie so.
Wɔde LCD draiver IC nketewa abata ho wɔ akwan titiriw abien so. COG (chip-on-glass) kyekyere IC no tẽẽ kɔ ahwehwɛ no ano, enti module no yɛ teateaa yiye na mmirikatu a efi IC so kɔ ahwehwɛ no mu no yɛ tiaa, na ɛma kwan ma wonya nsɛnkyerɛnne a ɛyɛ fɛ yiye. COB (chip-on-board) de IC no si PCB no so, wɔde waya abɔ mu na afei wɔde epoxy akata so, wɔ nhyehyɛe mu bɛn board a wɔtaa de di dwuma.
Saa nsonsonoe no trɛw fa biribiara a ɛwɔ asubɔnten no ase so: ne kɛse, wosow a wotumi gyina ano, nsu a ɛyɛ nwini a wotumi gyina ano, nhyiam ne nea wotumi siesie nyinaa yɛ kyɛnsee wɔ ha. COG ne COB nyɛ nea ɛkɔ anim sen nea ne bere atwam; wɔyɛ mfiridwuma akwan abien, a emu biara fata adwumayɛ tebea horow. Paw ɔkwan a ɛnteɛ na process tuning dodow biara ntumi nnya bio.
Mfaso a wotumi hu sen biara a ɛwɔ COG so ne sɛ ɛyɛ teateaa. Modules betumi akɔ fam milimita abien, glass edge outputs tẽẽ, interconnect runs yɛ tiaa na electromagnetic interference sua. 1602 nkyerɛwde nhyehyɛe ne 122x32 kosi 240x128 mfonini nhyehyɛe nyinaa yɛ nea ɛho akokwaw, a ahwehwɛ ne draiver ahorow pii wɔ hɔ. Aguade biara a ɛte nka wɔ ne kɛse ne ne mu duru ho — ultra-thin remote controls, wearables, compact panels — wɔ COG sɛ mmuae a wɔahyɛ da ayɛ.
Ɛsɛ sɛ wɔka n’ahye no pefee. IC no bata ahwehwɛ no ho tẽẽ, enti ahwehwɛ ano nhyɛso, kotow bere a wɔreboaboa ano ne ahodwiriw bere a wɔde rekɔ no nyinaa betumi aka ahotoso, na nhyiam no hwehwɛ sɛ wɔyɛ no pɛpɛɛpɛ kɛse. Nsɔano hye no yɛ nea nsu a ɛwɔ mu no te nka, enti ahotoso a ɛwɔ mmeae a ɛhɔ yɛ nwini kɛse bere tenten no hia nhyehyɛe a wɔatu ho ama. Ne tiaatwa mu no, COG yɛ adamfofa su ma teateaa ne hare; ɛnyɛ adamfofa su kɛse ma ɔsom a ɛyɛ basabasa.
COB yɛ nea ɛne eyi bɔ abira. Driver IC no te PCB no so, wire-bonded na afei epoxy-encapsulated sɛ ne nyinaa, ma ɛda adi pefee sɛ vibration ne humidity tolerance a eye, nhyiam a ɛkorɔn tolerance, ne board-level repair bere a biribi di huammɔ. Nneɛma a wɔde ma no ho akokwaw na mpɛn pii no ɛho ka sua. 1602, 2004 kɔsi 320x240 nkyerɛwde ne mfonini ahodoɔ yɛ ano aduru a wɔagye din, a wɔde adi dwuma bɛboro mfeɛ du wɔ mfiridwuma nnwinnadeɛ ne mfiri mu.
COB hye ne volume. IC no a wode bɛto PCB no so no kyerɛ sɛ ɛsɛ sɛ module no gyaw baabi ma no, enti ne kɛse ne ne kɛse nyinaa kɔ soro, na sɛ wobɛpiapia no akɔ milimita abien anaa abiɛsa ahunmu a, ne titiriw no, ɛrentumi nyɛ yiye. Inductance a bond nhama nso nyɛ papa sen COG direct bond wɔ high-frequency driving ase, na ɛma ɛyɛ sub-optimal ma high-resolution, high-refresh designs. Thinness ne adwumayɛ tebea — trade-off no te saa exchange no mu.
Nneɛma a wɔpaw a mfaso wɔ so no ba fam kodu nsɛmmisa abiɛsa so. Nea edi kan: ɛhe na saa screen yi kɔ, ne milimita dodow a ɛwɔ hɔ ma no — mmuae no na esi gyinae sɛ ebia COG betumi aba anaa. Nea ɛto so abien: dɛn ne adwumayɛbea no, so ɛbɛwosow, sɛnea ɛyɛ nwini, so wobesiesie — mmuae no na esi gyinae sɛ ebia COB ho hia anaa. Nea ɛto so abiɛsa: ɛka ne tumi — abien no nyinaa ho akokwaw, enti eyi ntaa nyɛ nea ɛyɛ gyinaesi.
Bere a wɔabua saa baasa no, mpɛn pii no, ɔkwan a wɔbɛfa so no mu da hɔ. Wobetumi ayɛ nkaeɛ a ɛnyɛ gyinapɛn no wɔ ahyɛdeɛ biara mu: wɔbɛtumi ayɛ inch akɛseɛ ne nsusuiɛ a ɛnyɛ gyinapɛn, na interface, logic voltage, viewing direction, FPC tenten ne pin nkyerɛaseɛ nyinaa betumi ayɛ nsakraeɛ wɔ design no mu. Yɛwɔ COG ne COB ano aduru a ɛho akokwaw; fa emu nsɛm, nsusuwii ne adwumayɛ tebea horow no kɔma na ano aduru ne nsɛm a wɔafa aka asan aba wɔ nnɔnhwerew aduonu anan mu. Ɛnyɛ ade a wɔpaw no nyɛ ade bi a wobɛpaw; ɛyɛ ɔkwan a wobɛfa so a ɛne wo mfiri no hyia.
Wɔtaa yɛ COG ne COB akyinnyegye no frame sɛ mfiridwuma paw, nanso wɔ mfiri nketewa fam no, nsakrae a ɛde ba kɛse ne sɛnea module no di nkitaho ne host board no. COB modules a pin headers yɛ bɔne fafiri: wobetumi de socket, sesa wɔ afuw mu, na handsoldered wɔ bere tiaa bi a wɔyɛ. Module koro no ara a ɛwɔ zebra-strip anaa flexible tail nhyehyɛe mu no nsɛe baabi nanso ɛma asɛnka adwuma nyɛ nea mfaso wɔ so na ɛde ahwehwɛde ahorow a ɛfa ahyiadi ho to nhyiam nhyehyɛe no so. Wɔ unit ɔhaha kakraa bi so no, module a egyina header so a ne nan ase yɛ kɛse kakra no taa yɛ nea asiane a ɛba fam paw.
Zebra strip nhyiam ahorow titiriw fata kɔkɔbɔ. Wogyina nhyɛso a ɛkɔ so daa ne nneɛma a ɛho tew so, na ɔdan a ɛbɔ ne ho mu wɔ ɔhyew ase no rennya nkitahodi bere ne bere mu. Sɛ ɔsebɔ nhyehyɛe bi yɛ nea wontumi nkwati a, kyerɛ compression range na sɔ unit a wɔaboaboa ano koraa hwɛ denam temperature cycling so sen sɛ wobɛfa bare module no so. Yɛka nkitahodi kwan ne ne mfiridwuma ahwehwɛde ahorow wɔ quotation no mu enti nhyiam asiane no da adi ansa na wɔde ahyɛde no ama.
COG ne COB akyinnyegye dodow no ara gyina adwumayɛ ntotoho so. Wɔtaa skip asɛmmisa a ɛsi ho gyinae ankasa wɔ afuw mu no: nea ɛba bere a saa screen yi di nkogu no. COG kyekyere ofirikafo IC no bata ahwehwɛ no ho, enti sɛ huammɔdi a, ɛkyerɛ sɛ wɔbɛsesa module no nyinaa, a wontumi nsiesie wɔ afuw mu. COB ma draiver no tra PCB no so, enti theoretical rework space wɔ hɔ ɛwom mpo sɛ wɔ nneyɛe mu no, wɔtaa de sesa.
Product positioning na esi mmuae no ho gyinae koraa. Wɔ afiri a wɔde di dwuma a wɔtow gu a ɛho ka yɛ den kɛse fam no, COG a ɛyɛ tratraa na ɛkora so no teɛ na ɛho nhia sɛ wosiesie. Wɔ nnwinnade a ɛhyɛn adwumayɛbea bi a wɔhwɛ kwan sɛ ɛbɛsom mfe pii na wɔasesa wɔ afuw mu ho no, ɛsɛ sɛ nea wɔpaw no dan kɔ sɛnea wobetumi asiesie so. Eyi nyɛ mfiridwuma mu ranking, ɛyɛ nea efi product type mu ba.
Nnwuma nketewa a wɔde yɛ adwuma no de ade biako foforo a ɛsɛ sɛ wosusuw ho ka ho: ɛsɛ sɛ wɔyɛ akuw a adi nkogu no mu nhwehwɛmu bere a wɔresɔ ahwɛ no. Sɛ wɔantumi mmue module no a, huammɔdi nhwehwɛmu gyae wɔ sesa na wonnya ntini biara a ɛde ba. Yɛhyɛ saa trade-off yi frankaa wɔ customization stage so sɛnea ɛbɛyɛ a client no nim wɔ quotation mu nea wɔapaw, sen sɛ yebehu sɛ ɔkwan biara nni hɔ a wɔbɛfa so asan akɔ wɔ huammɔdi no akyi.
Sɛ wɔpaw COG wie a, customization no kɔ so wɔ layers anan so, na ɛboa ma wohu nea ne bo yɛ mmerɛw. Glass outline ne segment layout no te mask no so, enti wɔreyɛ tooling: COG LCD module custom project tua wɔn ka pɛnkoro na afei ɛsan de di dwuma ma unit biara. Driver IC ne bias scheme no yɛ nea wobɛpaw afi menu a wɔahyɛ da ayɛ mu. FPC no yɛ adwinni, ne bo nyɛ den sɛ wobɛsan ahwɛ mu wɔ prototype stage na ne bo yɛ den wɔ tooling akyi. Bezel no yɛ nea ne bo yɛ mmerɛw sen ne nyinaa na nea adetɔfo taa sesa no.
Mfonini LCD a ɛwɔ kɔla biako a ne kɛse yɛ nea wɔahyɛ da ayɛ no yɛ aboa soronko wɔ segment panel ho. Ɛha na mask no kyerɛkyerɛ pixel matrix — 128x64, 122x32, 160x128 — na customization no yɛ outline a atwa ho ahyia a ɛka controller a ɛka ho. Aguadi-off ne sɛ graphic panel betumi akyerɛ biribiara a firmware no twetwe, a ɛka controller ne font table ho ka, bere a segment panel bo yɛ mmerɛw wɔ unit biara mu na ne bo yɛ mmerɛw koraa sɛ wɔbɛka kar. Ɛsɛ sɛ nneɛma a ɛkyerɛ ahyɛnsode koro no ara mfe du no yɛ segment; ɛsɛ sɛ nneɛma a ne screen mu nsɛm bɛsesa denam firmware so no yɛ graphic.
Ka wo project scenario ne ahwehwɛdeɛ kyerɛ yɛn, na yɛbɛma ano aduru a ɛfata no ahyia na yɛde quote ama wɔ nnɔnhwereɛ 24 ntam.
Nya Quote a Wɔde Ma KwaCOG ne COB LCD, PMOLED / AMOLED micro-display, 0.69-10.1-inch TFT kɔla screen ne LED akyi kanea module, asia series ne 61 mfonini ahorow a wɔreyɛ; wɔayɛ kɛseɛ a ɛnyɛ gyinapɛn, nsusuiɛ, ntamgyinafoɔ, akwankyerɛ a wɔde hwɛ ne FPC sɛdeɛ mfonini ahodoɔ teɛ; gyinapɛn, mfiridwuma ne trɛw ɔhyew abiɛsa-ahoɔhare ɔhyew beae; wɔde ma sɛnea RoHS, REACH ne CE kyerɛ a wɔde nkrataa a edi mũ a ɛkyerɛ sɛ wodi mmara so no, wobetumi atrɛw asram 12 warranty mu sɛnea adwuma no te.
Sua fa display ne display module ano aduru ho ade →